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Finding the Fourth Proportional to 98,331.92, 147,498.68 and 28,213.44

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Solution

The fourth proportional to 98,331.92, 147,498.68 and 28,213.44 is: 42,320.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,331.92 : 147,498.68 = 28,213.44 : x
  2. Step 2: Convert to fraction form
    98,331.92/147,498.68 = 28,213.44/x
  3. Step 3: Cross multiply
    98,331.92x = 147,498.68 × 28,213.44
  4. Step 4: Simplify right side
    98,331.92x = 4,161,445,158.26
  5. Step 5: Solve for x
    x = 4,161,445,158.26/98,331.92
  6. Step 6: Final answer
    x = 42,320.39

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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.