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Finding the Fourth Proportional to 118,046.10, 162,905.40 and 64,330.95

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Solution

The fourth proportional to 118,046.10, 162,905.40 and 64,330.95 is: 88,777.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,046.10 : 162,905.40 = 64,330.95 : x
  2. Step 2: Convert to fraction form
    118,046.10/162,905.40 = 64,330.95/x
  3. Step 3: Cross multiply
    118,046.10x = 162,905.40 × 64,330.95
  4. Step 4: Simplify right side
    118,046.10x = 10,479,859,142.13
  5. Step 5: Solve for x
    x = 10,479,859,142.13/118,046.10
  6. Step 6: Final answer
    x = 88,777.68

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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.