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Finding the Fourth Proportional to 71,307.99, 98,374.13 and 42,997.95

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Solution

The fourth proportional to 71,307.99, 98,374.13 and 42,997.95 is: 59,318.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,307.99 : 98,374.13 = 42,997.95 : x
  2. Step 2: Convert to fraction form
    71,307.99/98,374.13 = 42,997.95/x
  3. Step 3: Cross multiply
    71,307.99x = 98,374.13 × 42,997.95
  4. Step 4: Simplify right side
    71,307.99x = 4,229,885,708.04
  5. Step 5: Solve for x
    x = 4,229,885,708.04/71,307.99
  6. Step 6: Final answer
    x = 59,318.54

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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.