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Finding the Fourth Proportional to 71,960.76, 99,437.94 and 68,503.95

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Solution

The fourth proportional to 71,960.76, 99,437.94 and 68,503.95 is: 94,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,960.76 : 99,437.94 = 68,503.95 : x
  2. Step 2: Convert to fraction form
    71,960.76/99,437.94 = 68,503.95/x
  3. Step 3: Cross multiply
    71,960.76x = 99,437.94 × 68,503.95
  4. Step 4: Simplify right side
    71,960.76x = 6,811,891,669.86
  5. Step 5: Solve for x
    x = 6,811,891,669.86/71,960.76
  6. Step 6: Final answer
    x = 94,661.20

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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.