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Finding the Fourth Proportional to 719,612.25, 993,152.39 and 417,806.25

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Solution

The fourth proportional to 719,612.25, 993,152.39 and 417,806.25 is: 576,623.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,612.25 : 993,152.39 = 417,806.25 : x
  2. Step 2: Convert to fraction form
    719,612.25/993,152.39 = 417,806.25/x
  3. Step 3: Cross multiply
    719,612.25x = 993,152.39 × 417,806.25
  4. Step 4: Simplify right side
    719,612.25x = 414,945,273,655.41
  5. Step 5: Solve for x
    x = 414,945,273,655.41/719,612.25
  6. Step 6: Final answer
    x = 576,623.42

Related Problems

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Half scale
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Double scale
Find fourth proportional to 719,613.25, 993,153.77 and 417,807.25
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.