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Finding the Fourth Proportional to 28,354.70, 42,531.06 and 15,232.70

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Solution

The fourth proportional to 28,354.70, 42,531.06 and 15,232.70 is: 22,848.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354.70 : 42,531.06 = 15,232.70 : x
  2. Step 2: Convert to fraction form
    28,354.70/42,531.06 = 15,232.70/x
  3. Step 3: Cross multiply
    28,354.70x = 42,531.06 × 15,232.70
  4. Step 4: Simplify right side
    28,354.70x = 647,862,877.66
  5. Step 5: Solve for x
    x = 647,862,877.66/28,354.70
  6. Step 6: Final answer
    x = 22,848.52

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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.