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Finding the Fourth Proportional to 719,622.75, 993,166.89 and 417,816.75

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Solution

The fourth proportional to 719,622.75, 993,166.89 and 417,816.75 is: 576,637.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,622.75 : 993,166.89 = 417,816.75 : x
  2. Step 2: Convert to fraction form
    719,622.75/993,166.89 = 417,816.75/x
  3. Step 3: Cross multiply
    719,622.75x = 993,166.89 × 417,816.75
  4. Step 4: Simplify right side
    719,622.75x = 414,961,762,187.41
  5. Step 5: Solve for x
    x = 414,961,762,187.41/719,622.75
  6. Step 6: Final answer
    x = 576,637.92

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Double scale
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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.