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Finding the Fourth Proportional to 65,608.52, 98,418.64 and 28,160.18

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Solution

The fourth proportional to 65,608.52, 98,418.64 and 28,160.18 is: 42,242.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,608.52 : 98,418.64 = 28,160.18 : x
  2. Step 2: Convert to fraction form
    65,608.52/98,418.64 = 28,160.18/x
  3. Step 3: Cross multiply
    65,608.52x = 98,418.64 × 28,160.18
  4. Step 4: Simplify right side
    65,608.52x = 2,771,486,617.76
  5. Step 5: Solve for x
    x = 2,771,486,617.76/65,608.52
  6. Step 6: Final answer
    x = 42,242.79

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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.