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Finding the Fourth Proportional to 108,659.55, 162,934.65 and 64,299.90

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Solution

The fourth proportional to 108,659.55, 162,934.65 and 64,299.90 is: 96,417.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,659.55 : 162,934.65 = 64,299.90 : x
  2. Step 2: Convert to fraction form
    108,659.55/162,934.65 = 64,299.90/x
  3. Step 3: Cross multiply
    108,659.55x = 162,934.65 × 64,299.90
  4. Step 4: Simplify right side
    108,659.55x = 10,476,681,701.54
  5. Step 5: Solve for x
    x = 10,476,681,701.54/108,659.55
  6. Step 6: Final answer
    x = 96,417.50

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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.