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Finding the Fourth Proportional to 415,355.90, 573,191.66 and 224,369.29

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Solution

The fourth proportional to 415,355.90, 573,191.66 and 224,369.29 is: 309,629.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,355.90 : 573,191.66 = 224,369.29 : x
  2. Step 2: Convert to fraction form
    415,355.90/573,191.66 = 224,369.29/x
  3. Step 3: Cross multiply
    415,355.90x = 573,191.66 × 224,369.29
  4. Step 4: Simplify right side
    415,355.90x = 128,606,606,878.19
  5. Step 5: Solve for x
    x = 128,606,606,878.19/415,355.90
  6. Step 6: Final answer
    x = 309,629.90

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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.