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Finding the Fourth Proportional to 67,988.16, 93,490.92 and 59,019.98

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Solution

The fourth proportional to 67,988.16, 93,490.92 and 59,019.98 is: 81,158.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,988.16 : 93,490.92 = 59,019.98 : x
  2. Step 2: Convert to fraction form
    67,988.16/93,490.92 = 59,019.98/x
  3. Step 3: Cross multiply
    67,988.16x = 93,490.92 × 59,019.98
  4. Step 4: Simplify right side
    67,988.16x = 5,517,831,761.13
  5. Step 5: Solve for x
    x = 5,517,831,761.13/67,988.16
  6. Step 6: Final answer
    x = 81,158.72

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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.