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Finding the Fourth Proportional to 456,711.90, 685,067.85 and 141,200.70

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Solution

The fourth proportional to 456,711.90, 685,067.85 and 141,200.70 is: 211,801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,711.90 : 685,067.85 = 141,200.70 : x
  2. Step 2: Convert to fraction form
    456,711.90/685,067.85 = 141,200.70/x
  3. Step 3: Cross multiply
    456,711.90x = 685,067.85 × 141,200.70
  4. Step 4: Simplify right side
    456,711.90x = 96,732,059,967.50
  5. Step 5: Solve for x
    x = 96,732,059,967.50/456,711.90
  6. Step 6: Final answer
    x = 211,801.05

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Similar ratio
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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.