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Finding the Fourth Proportional to 38,891.40, 58,239.90 and 25,672.20

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Solution

The fourth proportional to 38,891.40, 58,239.90 and 25,672.20 is: 38,444.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,891.40 : 58,239.90 = 25,672.20 : x
  2. Step 2: Convert to fraction form
    38,891.40/58,239.90 = 25,672.20/x
  3. Step 3: Cross multiply
    38,891.40x = 58,239.90 × 25,672.20
  4. Step 4: Simplify right side
    38,891.40x = 1,495,146,360.78
  5. Step 5: Solve for x
    x = 1,495,146,360.78/38,891.40
  6. Step 6: Final answer
    x = 38,444.14

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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.