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Finding the Fourth Proportional to 48,614.31, 72,921.45 and 11,678.31

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Solution

The fourth proportional to 48,614.31, 72,921.45 and 11,678.31 is: 17,517.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,614.31 : 72,921.45 = 11,678.31 : x
  2. Step 2: Convert to fraction form
    48,614.31/72,921.45 = 11,678.31/x
  3. Step 3: Cross multiply
    48,614.31x = 72,921.45 × 11,678.31
  4. Step 4: Simplify right side
    48,614.31x = 851,599,298.75
  5. Step 5: Solve for x
    x = 851,599,298.75/48,614.31
  6. Step 6: Final answer
    x = 17,517.46

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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.