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Finding the Fourth Proportional to 71,424.56, 107,156.90 and 26,445.24

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Solution

The fourth proportional to 71,424.56, 107,156.90 and 26,445.24 is: 39,675.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,424.56 : 107,156.90 = 26,445.24 : x
  2. Step 2: Convert to fraction form
    71,424.56/107,156.90 = 26,445.24/x
  3. Step 3: Cross multiply
    71,424.56x = 107,156.90 × 26,445.24
  4. Step 4: Simplify right side
    71,424.56x = 2,833,789,938.16
  5. Step 5: Solve for x
    x = 2,833,789,938.16/71,424.56
  6. Step 6: Final answer
    x = 39,675.29

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1.5x scale

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.