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Finding the Fourth Proportional to 67,560.68, 93,243 and 38,879.76

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Solution

The fourth proportional to 67,560.68, 93,243 and 38,879.76 is: 53,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,560.68 : 93,243 = 38,879.76 : x
  2. Step 2: Convert to fraction form
    67,560.68/93,243 = 38,879.76/x
  3. Step 3: Cross multiply
    67,560.68x = 93,243 × 38,879.76
  4. Step 4: Simplify right side
    67,560.68x = 3,625,265,461.68
  5. Step 5: Solve for x
    x = 3,625,265,461.68/67,560.68
  6. Step 6: Final answer
    x = 53,659.40

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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.