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Finding the Fourth Proportional to 185,363.20, 278,044.80 and 115,206.40

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Solution

The fourth proportional to 185,363.20, 278,044.80 and 115,206.40 is: 172,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,363.20 : 278,044.80 = 115,206.40 : x
  2. Step 2: Convert to fraction form
    185,363.20/278,044.80 = 115,206.40/x
  3. Step 3: Cross multiply
    185,363.20x = 278,044.80 × 115,206.40
  4. Step 4: Simplify right side
    185,363.20x = 32,032,540,446.72
  5. Step 5: Solve for x
    x = 32,032,540,446.72/185,363.20
  6. Step 6: Final answer
    x = 172,809.60

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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.