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Finding the Fourth Proportional to 60,984.68, 84,147.77 and 35,139.20

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Solution

The fourth proportional to 60,984.68, 84,147.77 and 35,139.20 is: 48,485.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,984.68 : 84,147.77 = 35,139.20 : x
  2. Step 2: Convert to fraction form
    60,984.68/84,147.77 = 35,139.20/x
  3. Step 3: Cross multiply
    60,984.68x = 84,147.77 × 35,139.20
  4. Step 4: Simplify right side
    60,984.68x = 2,956,884,723.15
  5. Step 5: Solve for x
    x = 2,956,884,723.15/60,984.68
  6. Step 6: Final answer
    x = 48,485.70

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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.