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Finding the Fourth Proportional to 719,614.25, 993,155.15 and 417,808.25

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Solution

The fourth proportional to 719,614.25, 993,155.15 and 417,808.25 is: 576,626.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,614.25 : 993,155.15 = 417,808.25 : x
  2. Step 2: Convert to fraction form
    719,614.25/993,155.15 = 417,808.25/x
  3. Step 3: Cross multiply
    719,614.25x = 993,155.15 × 417,808.25
  4. Step 4: Simplify right side
    719,614.25x = 414,948,415,199.99
  5. Step 5: Solve for x
    x = 414,948,415,199.99/719,614.25
  6. Step 6: Final answer
    x = 576,626.18

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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.