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Finding the Fourth Proportional to 111,869.20, 167,803.80 and 107,568.40

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Solution

The fourth proportional to 111,869.20, 167,803.80 and 107,568.40 is: 161,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,869.20 : 167,803.80 = 107,568.40 : x
  2. Step 2: Convert to fraction form
    111,869.20/167,803.80 = 107,568.40/x
  3. Step 3: Cross multiply
    111,869.20x = 167,803.80 × 107,568.40
  4. Step 4: Simplify right side
    111,869.20x = 18,050,386,279.92
  5. Step 5: Solve for x
    x = 18,050,386,279.92/111,869.20
  6. Step 6: Final answer
    x = 161,352.60

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1.5x scale

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.