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Finding the Fourth Proportional to 98,502.80, 147,755.03 and 42,339.02

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Solution

The fourth proportional to 98,502.80, 147,755.03 and 42,339.02 is: 63,508.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,502.80 : 147,755.03 = 42,339.02 : x
  2. Step 2: Convert to fraction form
    98,502.80/147,755.03 = 42,339.02/x
  3. Step 3: Cross multiply
    98,502.80x = 147,755.03 × 42,339.02
  4. Step 4: Simplify right side
    98,502.80x = 6,255,802,219.80
  5. Step 5: Solve for x
    x = 6,255,802,219.80/98,502.80
  6. Step 6: Final answer
    x = 63,508.88

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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.