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Finding the Fourth Proportional to 124,750.71, 172,156.03 and 67,390.04

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Solution

The fourth proportional to 124,750.71, 172,156.03 and 67,390.04 is: 92,998.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,750.71 : 172,156.03 = 67,390.04 : x
  2. Step 2: Convert to fraction form
    124,750.71/172,156.03 = 67,390.04/x
  3. Step 3: Cross multiply
    124,750.71x = 172,156.03 × 67,390.04
  4. Step 4: Simplify right side
    124,750.71x = 11,601,602,009.86
  5. Step 5: Solve for x
    x = 11,601,602,009.86/124,750.71
  6. Step 6: Final answer
    x = 92,998.28

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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.