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Finding the Fourth Proportional to 65,016.80, 89,698.46 and 48,061.74

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Solution

The fourth proportional to 65,016.80, 89,698.46 and 48,061.74 is: 66,306.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,016.80 : 89,698.46 = 48,061.74 : x
  2. Step 2: Convert to fraction form
    65,016.80/89,698.46 = 48,061.74/x
  3. Step 3: Cross multiply
    65,016.80x = 89,698.46 × 48,061.74
  4. Step 4: Simplify right side
    65,016.80x = 4,311,063,822.61
  5. Step 5: Solve for x
    x = 4,311,063,822.61/65,016.80
  6. Step 6: Final answer
    x = 66,306.93

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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.