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Finding the Fourth Proportional to 98,657.44, 148,008.32 and 28,542.20

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Solution

The fourth proportional to 98,657.44, 148,008.32 and 28,542.20 is: 42,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,657.44 : 148,008.32 = 28,542.20 : x
  2. Step 2: Convert to fraction form
    98,657.44/148,008.32 = 28,542.20/x
  3. Step 3: Cross multiply
    98,657.44x = 148,008.32 × 28,542.20
  4. Step 4: Simplify right side
    98,657.44x = 4,224,483,071.10
  5. Step 5: Solve for x
    x = 4,224,483,071.10/98,657.44
  6. Step 6: Final answer
    x = 42,819.71

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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.