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Finding the Fourth Proportional to 124,952.79, 172,439.15 and 68,364.16

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Solution

The fourth proportional to 124,952.79, 172,439.15 and 68,364.16 is: 94,344.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,952.79 : 172,439.15 = 68,364.16 : x
  2. Step 2: Convert to fraction form
    124,952.79/172,439.15 = 68,364.16/x
  3. Step 3: Cross multiply
    124,952.79x = 172,439.15 × 68,364.16
  4. Step 4: Simplify right side
    124,952.79x = 11,788,657,640.86
  5. Step 5: Solve for x
    x = 11,788,657,640.86/124,952.79
  6. Step 6: Final answer
    x = 94,344.89

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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.