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Finding the Fourth Proportional to 125,217.60, 187,764.80 and 61,964.80

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Solution

The fourth proportional to 125,217.60, 187,764.80 and 61,964.80 is: 92,916.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,217.60 : 187,764.80 = 61,964.80 : x
  2. Step 2: Convert to fraction form
    125,217.60/187,764.80 = 61,964.80/x
  3. Step 3: Cross multiply
    125,217.60x = 187,764.80 × 61,964.80
  4. Step 4: Simplify right side
    125,217.60x = 11,634,808,279.04
  5. Step 5: Solve for x
    x = 11,634,808,279.04/125,217.60
  6. Step 6: Final answer
    x = 92,916.72

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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.