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Finding the Fourth Proportional to 125,082.71, 187,388.64 and 61,828.79

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Solution

The fourth proportional to 125,082.71, 187,388.64 and 61,828.79 is: 92,626.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,082.71 : 187,388.64 = 61,828.79 : x
  2. Step 2: Convert to fraction form
    125,082.71/187,388.64 = 61,828.79/x
  3. Step 3: Cross multiply
    125,082.71x = 187,388.64 × 61,828.79
  4. Step 4: Simplify right side
    125,082.71x = 11,586,012,870.95
  5. Step 5: Solve for x
    x = 11,586,012,870.95/125,082.71
  6. Step 6: Final answer
    x = 92,626.81

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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.