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Finding the Fourth Proportional to 117,672.30, 162,388.76 and 63,957.30

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Solution

The fourth proportional to 117,672.30, 162,388.76 and 63,957.30 is: 88,261.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,672.30 : 162,388.76 = 63,957.30 : x
  2. Step 2: Convert to fraction form
    117,672.30/162,388.76 = 63,957.30/x
  3. Step 3: Cross multiply
    117,672.30x = 162,388.76 × 63,957.30
  4. Step 4: Simplify right side
    117,672.30x = 10,385,946,639.95
  5. Step 5: Solve for x
    x = 10,385,946,639.95/117,672.30
  6. Step 6: Final answer
    x = 88,261.61

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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.