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Finding the Fourth Proportional to 124,713.60, 172,096.81 and 68,124.97

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Solution

The fourth proportional to 124,713.60, 172,096.81 and 68,124.97 is: 94,008.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,713.60 : 172,096.81 = 68,124.97 : x
  2. Step 2: Convert to fraction form
    124,713.60/172,096.81 = 68,124.97/x
  3. Step 3: Cross multiply
    124,713.60x = 172,096.81 × 68,124.97
  4. Step 4: Simplify right side
    124,713.60x = 11,724,090,018.35
  5. Step 5: Solve for x
    x = 11,724,090,018.35/124,713.60
  6. Step 6: Final answer
    x = 94,008.11

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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.