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Finding the Fourth Proportional to 330,436.56, 456,025.01 and 187,197.78

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Solution

The fourth proportional to 330,436.56, 456,025.01 and 187,197.78 is: 258,345.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,436.56 : 456,025.01 = 187,197.78 : x
  2. Step 2: Convert to fraction form
    330,436.56/456,025.01 = 187,197.78/x
  3. Step 3: Cross multiply
    330,436.56x = 456,025.01 × 187,197.78
  4. Step 4: Simplify right side
    330,436.56x = 85,366,868,560.49
  5. Step 5: Solve for x
    x = 85,366,868,560.49/330,436.56
  6. Step 6: Final answer
    x = 258,345.71

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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.