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Finding the Fourth Proportional to 113,913.74, 157,195.95 and 63,611.66

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Solution

The fourth proportional to 113,913.74, 157,195.95 and 63,611.66 is: 87,781.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,913.74 : 157,195.95 = 63,611.66 : x
  2. Step 2: Convert to fraction form
    113,913.74/157,195.95 = 63,611.66/x
  3. Step 3: Cross multiply
    113,913.74x = 157,195.95 × 63,611.66
  4. Step 4: Simplify right side
    113,913.74x = 9,999,495,324.78
  5. Step 5: Solve for x
    x = 9,999,495,324.78/113,913.74
  6. Step 6: Final answer
    x = 87,781.29

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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.