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Finding the Fourth Proportional to 88,157.70, 121,657.24 and 47,871.14

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Solution

The fourth proportional to 88,157.70, 121,657.24 and 47,871.14 is: 66,061.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,157.70 : 121,657.24 = 47,871.14 : x
  2. Step 2: Convert to fraction form
    88,157.70/121,657.24 = 47,871.14/x
  3. Step 3: Cross multiply
    88,157.70x = 121,657.24 × 47,871.14
  4. Step 4: Simplify right side
    88,157.70x = 5,823,870,219.61
  5. Step 5: Solve for x
    x = 5,823,870,219.61/88,157.70
  6. Step 6: Final answer
    x = 66,061.96

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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.