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Finding the Fourth Proportional to 125,271.72, 187,902.72 and 41,038.20

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Solution

The fourth proportional to 125,271.72, 187,902.72 and 41,038.20 is: 61,555.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,271.72 : 187,902.72 = 41,038.20 : x
  2. Step 2: Convert to fraction form
    125,271.72/187,902.72 = 41,038.20/x
  3. Step 3: Cross multiply
    125,271.72x = 187,902.72 × 41,038.20
  4. Step 4: Simplify right side
    125,271.72x = 7,711,189,403.90
  5. Step 5: Solve for x
    x = 7,711,189,403.90/125,271.72
  6. Step 6: Final answer
    x = 61,555.71

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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.