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Finding the Fourth Proportional to 124,502.86, 171,814.47 and 67,915.42

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Solution

The fourth proportional to 124,502.86, 171,814.47 and 67,915.42 is: 93,723.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,502.86 : 171,814.47 = 67,915.42 : x
  2. Step 2: Convert to fraction form
    124,502.86/171,814.47 = 67,915.42/x
  3. Step 3: Cross multiply
    124,502.86x = 171,814.47 × 67,915.42
  4. Step 4: Simplify right side
    124,502.86x = 11,668,851,892.13
  5. Step 5: Solve for x
    x = 11,668,851,892.13/124,502.86
  6. Step 6: Final answer
    x = 93,723.57

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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.