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Finding the Fourth Proportional to 67,398.56, 92,911.56 and 47,191.76

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Solution

The fourth proportional to 67,398.56, 92,911.56 and 47,191.76 is: 65,055.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,398.56 : 92,911.56 = 47,191.76 : x
  2. Step 2: Convert to fraction form
    67,398.56/92,911.56 = 47,191.76/x
  3. Step 3: Cross multiply
    67,398.56x = 92,911.56 × 47,191.76
  4. Step 4: Simplify right side
    67,398.56x = 4,384,660,040.75
  5. Step 5: Solve for x
    x = 4,384,660,040.75/67,398.56
  6. Step 6: Final answer
    x = 65,055.69

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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.