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Finding the Fourth Proportional to 51,920.62, 71,650.40 and 28,047.28

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Solution

The fourth proportional to 51,920.62, 71,650.40 and 28,047.28 is: 38,705.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,920.62 : 71,650.40 = 28,047.28 : x
  2. Step 2: Convert to fraction form
    51,920.62/71,650.40 = 28,047.28/x
  3. Step 3: Cross multiply
    51,920.62x = 71,650.40 × 28,047.28
  4. Step 4: Simplify right side
    51,920.62x = 2,009,598,830.91
  5. Step 5: Solve for x
    x = 2,009,598,830.91/51,920.62
  6. Step 6: Final answer
    x = 38,705.22

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.