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Finding the Fourth Proportional to 89,722.80, 134,435.88 and 63,382.32

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Solution

The fourth proportional to 89,722.80, 134,435.88 and 63,382.32 is: 94,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,722.80 : 134,435.88 = 63,382.32 : x
  2. Step 2: Convert to fraction form
    89,722.80/134,435.88 = 63,382.32/x
  3. Step 3: Cross multiply
    89,722.80x = 134,435.88 × 63,382.32
  4. Step 4: Simplify right side
    89,722.80x = 8,520,857,965.64
  5. Step 5: Solve for x
    x = 8,520,857,965.64/89,722.80
  6. Step 6: Final answer
    x = 94,968.70

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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.