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Finding the Fourth Proportional to 71,852.85, 99,158.94 and 43,162.86

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Solution

The fourth proportional to 71,852.85, 99,158.94 and 43,162.86 is: 59,565.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,852.85 : 99,158.94 = 43,162.86 : x
  2. Step 2: Convert to fraction form
    71,852.85/99,158.94 = 43,162.86/x
  3. Step 3: Cross multiply
    71,852.85x = 99,158.94 × 43,162.86
  4. Step 4: Simplify right side
    71,852.85x = 4,279,983,444.97
  5. Step 5: Solve for x
    x = 4,279,983,444.97/71,852.85
  6. Step 6: Final answer
    x = 59,565.95

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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.