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Finding the Fourth Proportional to 118,070.97, 162,933.21 and 64,354.86

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Solution

The fourth proportional to 118,070.97, 162,933.21 and 64,354.86 is: 88,807.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,070.97 : 162,933.21 = 64,354.86 : x
  2. Step 2: Convert to fraction form
    118,070.97/162,933.21 = 64,354.86/x
  3. Step 3: Cross multiply
    118,070.97x = 162,933.21 × 64,354.86
  4. Step 4: Simplify right side
    118,070.97x = 10,485,543,918.90
  5. Step 5: Solve for x
    x = 10,485,543,918.90/118,070.97
  6. Step 6: Final answer
    x = 88,807.13

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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.