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Finding the Fourth Proportional to 185,805.70, 278,708.55 and 156,937.30

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Solution

The fourth proportional to 185,805.70, 278,708.55 and 156,937.30 is: 235,405.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,805.70 : 278,708.55 = 156,937.30 : x
  2. Step 2: Convert to fraction form
    185,805.70/278,708.55 = 156,937.30/x
  3. Step 3: Cross multiply
    185,805.70x = 278,708.55 × 156,937.30
  4. Step 4: Simplify right side
    185,805.70x = 43,739,767,323.92
  5. Step 5: Solve for x
    x = 43,739,767,323.92/185,805.70
  6. Step 6: Final answer
    x = 235,405.95

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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.