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Finding the Fourth Proportional to 88,315.17, 132,472.79 and 21,756.60

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Solution

The fourth proportional to 88,315.17, 132,472.79 and 21,756.60 is: 32,634.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,315.17 : 132,472.79 = 21,756.60 : x
  2. Step 2: Convert to fraction form
    88,315.17/132,472.79 = 21,756.60/x
  3. Step 3: Cross multiply
    88,315.17x = 132,472.79 × 21,756.60
  4. Step 4: Simplify right side
    88,315.17x = 2,882,157,502.91
  5. Step 5: Solve for x
    x = 2,882,157,502.91/88,315.17
  6. Step 6: Final answer
    x = 32,634.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.