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Finding the Fourth Proportional to 124,998.84, 187,627.86 and 83,734.20

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Solution

The fourth proportional to 124,998.84, 187,627.86 and 83,734.20 is: 125,688.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,998.84 : 187,627.86 = 83,734.20 : x
  2. Step 2: Convert to fraction form
    124,998.84/187,627.86 = 83,734.20/x
  3. Step 3: Cross multiply
    124,998.84x = 187,627.86 × 83,734.20
  4. Step 4: Simplify right side
    124,998.84x = 15,710,868,754.81
  5. Step 5: Solve for x
    x = 15,710,868,754.81/124,998.84
  6. Step 6: Final answer
    x = 125,688.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.