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Finding the Fourth Proportional to 125,072.56, 172,600.20 and 68,483.92

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Solution

The fourth proportional to 125,072.56, 172,600.20 and 68,483.92 is: 94,507.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,072.56 : 172,600.20 = 68,483.92 : x
  2. Step 2: Convert to fraction form
    125,072.56/172,600.20 = 68,483.92/x
  3. Step 3: Cross multiply
    125,072.56x = 172,600.20 × 68,483.92
  4. Step 4: Simplify right side
    125,072.56x = 11,820,338,288.78
  5. Step 5: Solve for x
    x = 11,820,338,288.78/125,072.56
  6. Step 6: Final answer
    x = 94,507.85

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1.5x scale

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.