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Finding the Fourth Proportional to 191,902.60, 287,853.90 and 125,417.80

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Solution

The fourth proportional to 191,902.60, 287,853.90 and 125,417.80 is: 188,126.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,902.60 : 287,853.90 = 125,417.80 : x
  2. Step 2: Convert to fraction form
    191,902.60/287,853.90 = 125,417.80/x
  3. Step 3: Cross multiply
    191,902.60x = 287,853.90 × 125,417.80
  4. Step 4: Simplify right side
    191,902.60x = 36,102,002,859.42
  5. Step 5: Solve for x
    x = 36,102,002,859.42/191,902.60
  6. Step 6: Final answer
    x = 188,126.70

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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.