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Finding the Fourth Proportional to 65,612.80, 98,467.80 and 48,116.80

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Solution

The fourth proportional to 65,612.80, 98,467.80 and 48,116.80 is: 72,210.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,612.80 : 98,467.80 = 48,116.80 : x
  2. Step 2: Convert to fraction form
    65,612.80/98,467.80 = 48,116.80/x
  3. Step 3: Cross multiply
    65,612.80x = 98,467.80 × 48,116.80
  4. Step 4: Simplify right side
    65,612.80x = 4,737,955,439.04
  5. Step 5: Solve for x
    x = 4,737,955,439.04/65,612.80
  6. Step 6: Final answer
    x = 72,210.84

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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.