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Finding the Fourth Proportional to 125,700.61, 188,377.57 and 92,438.77

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Solution

The fourth proportional to 125,700.61, 188,377.57 and 92,438.77 is: 138,530.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,700.61 : 188,377.57 = 92,438.77 : x
  2. Step 2: Convert to fraction form
    125,700.61/188,377.57 = 92,438.77/x
  3. Step 3: Cross multiply
    125,700.61x = 188,377.57 × 92,438.77
  4. Step 4: Simplify right side
    125,700.61x = 17,413,390,866.39
  5. Step 5: Solve for x
    x = 17,413,390,866.39/125,700.61
  6. Step 6: Final answer
    x = 138,530.68

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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.