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Finding the Fourth Proportional to 118,373.25, 163,354.12 and 64,658.28

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Solution

The fourth proportional to 118,373.25, 163,354.12 and 64,658.28 is: 89,227.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,373.25 : 163,354.12 = 64,658.28 : x
  2. Step 2: Convert to fraction form
    118,373.25/163,354.12 = 64,658.28/x
  3. Step 3: Cross multiply
    118,373.25x = 163,354.12 × 64,658.28
  4. Step 4: Simplify right side
    118,373.25x = 10,562,196,268.47
  5. Step 5: Solve for x
    x = 10,562,196,268.47/118,373.25
  6. Step 6: Final answer
    x = 89,227.90

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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.