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Finding the Fourth Proportional to 112,568.80, 155,344.08 and 67,266.40

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Solution

The fourth proportional to 112,568.80, 155,344.08 and 67,266.40 is: 92,827.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,568.80 : 155,344.08 = 67,266.40 : x
  2. Step 2: Convert to fraction form
    112,568.80/155,344.08 = 67,266.40/x
  3. Step 3: Cross multiply
    112,568.80x = 155,344.08 × 67,266.40
  4. Step 4: Simplify right side
    112,568.80x = 10,449,437,022.91
  5. Step 5: Solve for x
    x = 10,449,437,022.91/112,568.80
  6. Step 6: Final answer
    x = 92,827.12

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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.