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Finding the Fourth Proportional to 92,487.20, 138,730.80 and 33,324.80

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Solution

The fourth proportional to 92,487.20, 138,730.80 and 33,324.80 is: 49,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,487.20 : 138,730.80 = 33,324.80 : x
  2. Step 2: Convert to fraction form
    92,487.20/138,730.80 = 33,324.80/x
  3. Step 3: Cross multiply
    92,487.20x = 138,730.80 × 33,324.80
  4. Step 4: Simplify right side
    92,487.20x = 4,623,176,163.84
  5. Step 5: Solve for x
    x = 4,623,176,163.84/92,487.20
  6. Step 6: Final answer
    x = 49,987.20

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1.5x scale

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.