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Finding the Fourth Proportional to 125,082.55, 187,388.40 and 61,828.63

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Solution

The fourth proportional to 125,082.55, 187,388.40 and 61,828.63 is: 92,626.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,082.55 : 187,388.40 = 61,828.63 : x
  2. Step 2: Convert to fraction form
    125,082.55/187,388.40 = 61,828.63/x
  3. Step 3: Cross multiply
    125,082.55x = 187,388.40 × 61,828.63
  4. Step 4: Simplify right side
    125,082.55x = 11,585,968,515.98
  5. Step 5: Solve for x
    x = 11,585,968,515.98/125,082.55
  6. Step 6: Final answer
    x = 92,626.58

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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.