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Finding the Fourth Proportional to 98,422.20, 135,822.60 and 53,710.20

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Solution

The fourth proportional to 98,422.20, 135,822.60 and 53,710.20 is: 74,120.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,422.20 : 135,822.60 = 53,710.20 : x
  2. Step 2: Convert to fraction form
    98,422.20/135,822.60 = 53,710.20/x
  3. Step 3: Cross multiply
    98,422.20x = 135,822.60 × 53,710.20
  4. Step 4: Simplify right side
    98,422.20x = 7,295,059,010.52
  5. Step 5: Solve for x
    x = 7,295,059,010.52/98,422.20
  6. Step 6: Final answer
    x = 74,120.06

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1.5x scale

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.