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Finding the Fourth Proportional to 104,205.76, 156,306.40 and 25,320.40

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Solution

The fourth proportional to 104,205.76, 156,306.40 and 25,320.40 is: 37,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,205.76 : 156,306.40 = 25,320.40 : x
  2. Step 2: Convert to fraction form
    104,205.76/156,306.40 = 25,320.40/x
  3. Step 3: Cross multiply
    104,205.76x = 156,306.40 × 25,320.40
  4. Step 4: Simplify right side
    104,205.76x = 3,957,740,570.56
  5. Step 5: Solve for x
    x = 3,957,740,570.56/104,205.76
  6. Step 6: Final answer
    x = 37,980.06

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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.