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Finding the Fourth Proportional to 72,966.66, 100,684.18 and 42,338.94

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Solution

The fourth proportional to 72,966.66, 100,684.18 and 42,338.94 is: 58,422.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,966.66 : 100,684.18 = 42,338.94 : x
  2. Step 2: Convert to fraction form
    72,966.66/100,684.18 = 42,338.94/x
  3. Step 3: Cross multiply
    72,966.66x = 100,684.18 × 42,338.94
  4. Step 4: Simplify right side
    72,966.66x = 4,262,861,455.97
  5. Step 5: Solve for x
    x = 4,262,861,455.97/72,966.66
  6. Step 6: Final answer
    x = 58,422.04

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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.