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Finding the Fourth Proportional to 207,853.60, 311,872.20 and 101,178.40

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Solution

The fourth proportional to 207,853.60, 311,872.20 and 101,178.40 is: 151,812.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,853.60 : 311,872.20 = 101,178.40 : x
  2. Step 2: Convert to fraction form
    207,853.60/311,872.20 = 101,178.40/x
  3. Step 3: Cross multiply
    207,853.60x = 311,872.20 × 101,178.40
  4. Step 4: Simplify right side
    207,853.60x = 31,554,730,200.48
  5. Step 5: Solve for x
    x = 31,554,730,200.48/207,853.60
  6. Step 6: Final answer
    x = 151,812.29

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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.