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Finding the Fourth Proportional to 257,589.60, 386,380.35 and 70,601.10

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Solution

The fourth proportional to 257,589.60, 386,380.35 and 70,601.10 is: 105,900.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,589.60 : 386,380.35 = 70,601.10 : x
  2. Step 2: Convert to fraction form
    257,589.60/386,380.35 = 70,601.10/x
  3. Step 3: Cross multiply
    257,589.60x = 386,380.35 × 70,601.10
  4. Step 4: Simplify right side
    257,589.60x = 27,278,877,728.39
  5. Step 5: Solve for x
    x = 27,278,877,728.39/257,589.60
  6. Step 6: Final answer
    x = 105,900.54

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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.