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Finding the Fourth Proportional to 109,402.70, 150,987.80 and 63,472.46

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Solution

The fourth proportional to 109,402.70, 150,987.80 and 63,472.46 is: 87,599.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,402.70 : 150,987.80 = 63,472.46 : x
  2. Step 2: Convert to fraction form
    109,402.70/150,987.80 = 63,472.46/x
  3. Step 3: Cross multiply
    109,402.70x = 150,987.80 × 63,472.46
  4. Step 4: Simplify right side
    109,402.70x = 9,583,567,632.14
  5. Step 5: Solve for x
    x = 9,583,567,632.14/109,402.70
  6. Step 6: Final answer
    x = 87,599.00

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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.