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Finding the Fourth Proportional to 60,679.80, 83,736.18 and 38,031

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Solution

The fourth proportional to 60,679.80, 83,736.18 and 38,031 is: 52,481.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,679.80 : 83,736.18 = 38,031 : x
  2. Step 2: Convert to fraction form
    60,679.80/83,736.18 = 38,031/x
  3. Step 3: Cross multiply
    60,679.80x = 83,736.18 × 38,031
  4. Step 4: Simplify right side
    60,679.80x = 3,184,570,661.58
  5. Step 5: Solve for x
    x = 3,184,570,661.58/60,679.80
  6. Step 6: Final answer
    x = 52,481.56

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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.