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Finding the Fourth Proportional to 125,083.87, 187,669.85 and 83,130.52

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Solution

The fourth proportional to 125,083.87, 187,669.85 and 83,130.52 is: 124,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,083.87 : 187,669.85 = 83,130.52 : x
  2. Step 2: Convert to fraction form
    125,083.87/187,669.85 = 83,130.52/x
  3. Step 3: Cross multiply
    125,083.87x = 187,669.85 × 83,130.52
  4. Step 4: Simplify right side
    125,083.87x = 15,601,092,218.82
  5. Step 5: Solve for x
    x = 15,601,092,218.82/125,083.87
  6. Step 6: Final answer
    x = 124,725.05

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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.