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Finding the Fourth Proportional to 88,195.96, 121,711.72 and 47,910.48

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Solution

The fourth proportional to 88,195.96, 121,711.72 and 47,910.48 is: 66,117.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,195.96 : 121,711.72 = 47,910.48 : x
  2. Step 2: Convert to fraction form
    88,195.96/121,711.72 = 47,910.48/x
  3. Step 3: Cross multiply
    88,195.96x = 121,711.72 × 47,910.48
  4. Step 4: Simplify right side
    88,195.96x = 5,831,266,926.83
  5. Step 5: Solve for x
    x = 5,831,266,926.83/88,195.96
  6. Step 6: Final answer
    x = 66,117.17

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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.