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Finding the Fourth Proportional to 88,876.40, 132,990.60 and 65,548.40

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Solution

The fourth proportional to 88,876.40, 132,990.60 and 65,548.40 is: 98,083.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,876.40 : 132,990.60 = 65,548.40 : x
  2. Step 2: Convert to fraction form
    88,876.40/132,990.60 = 65,548.40/x
  3. Step 3: Cross multiply
    88,876.40x = 132,990.60 × 65,548.40
  4. Step 4: Simplify right side
    88,876.40x = 8,717,321,045.04
  5. Step 5: Solve for x
    x = 8,717,321,045.04/88,876.40
  6. Step 6: Final answer
    x = 98,083.64

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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.