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Finding the Fourth Proportional to 125,081.69, 187,565.90 and 53,970.77

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Solution

The fourth proportional to 125,081.69, 187,565.90 and 53,970.77 is: 80,931.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,081.69 : 187,565.90 = 53,970.77 : x
  2. Step 2: Convert to fraction form
    125,081.69/187,565.90 = 53,970.77/x
  3. Step 3: Cross multiply
    125,081.69x = 187,565.90 × 53,970.77
  4. Step 4: Simplify right side
    125,081.69x = 10,123,076,247.80
  5. Step 5: Solve for x
    x = 10,123,076,247.80/125,081.69
  6. Step 6: Final answer
    x = 80,931.72

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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.