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Finding the Fourth Proportional to 125,931.20, 188,770.56 and 58,510.60

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Solution

The fourth proportional to 125,931.20, 188,770.56 and 58,510.60 is: 87,707.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,931.20 : 188,770.56 = 58,510.60 : x
  2. Step 2: Convert to fraction form
    125,931.20/188,770.56 = 58,510.60/x
  3. Step 3: Cross multiply
    125,931.20x = 188,770.56 × 58,510.60
  4. Step 4: Simplify right side
    125,931.20x = 11,045,078,727.94
  5. Step 5: Solve for x
    x = 11,045,078,727.94/125,931.20
  6. Step 6: Final answer
    x = 87,707.25

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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.