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Finding the Fourth Proportional to 412,275.70, 618,501.84 and 127,960.30

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Solution

The fourth proportional to 412,275.70, 618,501.84 and 127,960.30 is: 191,967.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,275.70 : 618,501.84 = 127,960.30 : x
  2. Step 2: Convert to fraction form
    412,275.70/618,501.84 = 127,960.30/x
  3. Step 3: Cross multiply
    412,275.70x = 618,501.84 × 127,960.30
  4. Step 4: Simplify right side
    412,275.70x = 79,143,680,996.95
  5. Step 5: Solve for x
    x = 79,143,680,996.95/412,275.70
  6. Step 6: Final answer
    x = 191,967.85

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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.