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Finding the Fourth Proportional to 67,339.76, 92,913.84 and 38,657.76

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Solution

The fourth proportional to 67,339.76, 92,913.84 and 38,657.76 is: 53,339.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,339.76 : 92,913.84 = 38,657.76 : x
  2. Step 2: Convert to fraction form
    67,339.76/92,913.84 = 38,657.76/x
  3. Step 3: Cross multiply
    67,339.76x = 92,913.84 × 38,657.76
  4. Step 4: Simplify right side
    67,339.76x = 3,591,840,927.40
  5. Step 5: Solve for x
    x = 3,591,840,927.40/67,339.76
  6. Step 6: Final answer
    x = 53,339.08

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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.