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Finding the Fourth Proportional to 617,545.40, 926,318.10 and 417,961.40

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Solution

The fourth proportional to 617,545.40, 926,318.10 and 417,961.40 is: 626,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,545.40 : 926,318.10 = 417,961.40 : x
  2. Step 2: Convert to fraction form
    617,545.40/926,318.10 = 417,961.40/x
  3. Step 3: Cross multiply
    617,545.40x = 926,318.10 × 417,961.40
  4. Step 4: Simplify right side
    617,545.40x = 387,165,209,921.34
  5. Step 5: Solve for x
    x = 387,165,209,921.34/617,545.40
  6. Step 6: Final answer
    x = 626,942.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.