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Finding the Fourth Proportional to 80,308.52, 110,828.64 and 48,471.20

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Solution

The fourth proportional to 80,308.52, 110,828.64 and 48,471.20 is: 66,892.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,308.52 : 110,828.64 = 48,471.20 : x
  2. Step 2: Convert to fraction form
    80,308.52/110,828.64 = 48,471.20/x
  3. Step 3: Cross multiply
    80,308.52x = 110,828.64 × 48,471.20
  4. Step 4: Simplify right side
    80,308.52x = 5,371,997,175.17
  5. Step 5: Solve for x
    x = 5,371,997,175.17/80,308.52
  6. Step 6: Final answer
    x = 66,892.00

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Why These Related Problems?

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