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Finding the Fourth Proportional to 415,522.04, 623,061.52 and 215,641.17

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Solution

The fourth proportional to 415,522.04, 623,061.52 and 215,641.17 is: 323,346.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,522.04 : 623,061.52 = 215,641.17 : x
  2. Step 2: Convert to fraction form
    415,522.04/623,061.52 = 215,641.17/x
  3. Step 3: Cross multiply
    415,522.04x = 623,061.52 × 215,641.17
  4. Step 4: Simplify right side
    415,522.04x = 134,357,714,615.68
  5. Step 5: Solve for x
    x = 134,357,714,615.68/415,522.04
  6. Step 6: Final answer
    x = 323,346.79

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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.