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Finding the Fourth Proportional to 92,568.40, 138,820.20 and 48,180.40

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Solution

The fourth proportional to 92,568.40, 138,820.20 and 48,180.40 is: 72,253.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,568.40 : 138,820.20 = 48,180.40 : x
  2. Step 2: Convert to fraction form
    92,568.40/138,820.20 = 48,180.40/x
  3. Step 3: Cross multiply
    92,568.40x = 138,820.20 × 48,180.40
  4. Step 4: Simplify right side
    92,568.40x = 6,688,412,764.08
  5. Step 5: Solve for x
    x = 6,688,412,764.08/92,568.40
  6. Step 6: Final answer
    x = 72,253.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.