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Finding the Fourth Proportional to 72,964.67, 100,681.43 and 42,336.95

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Solution

The fourth proportional to 72,964.67, 100,681.43 and 42,336.95 is: 58,419.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,964.67 : 100,681.43 = 42,336.95 : x
  2. Step 2: Convert to fraction form
    72,964.67/100,681.43 = 42,336.95/x
  3. Step 3: Cross multiply
    72,964.67x = 100,681.43 × 42,336.95
  4. Step 4: Simplify right side
    72,964.67x = 4,262,543,952.75
  5. Step 5: Solve for x
    x = 4,262,543,952.75/72,964.67
  6. Step 6: Final answer
    x = 58,419.29

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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.