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Finding the Fourth Proportional to 118,953.61, 164,155.65 and 67,982.15

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Solution

The fourth proportional to 118,953.61, 164,155.65 and 67,982.15 is: 93,815.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,953.61 : 164,155.65 = 67,982.15 : x
  2. Step 2: Convert to fraction form
    118,953.61/164,155.65 = 67,982.15/x
  3. Step 3: Cross multiply
    118,953.61x = 164,155.65 × 67,982.15
  4. Step 4: Simplify right side
    118,953.61x = 11,159,654,177.10
  5. Step 5: Solve for x
    x = 11,159,654,177.10/118,953.61
  6. Step 6: Final answer
    x = 93,815.18

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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.