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Finding the Fourth Proportional to 543,337.20, 815,005.80 and 188,387.10

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Solution

The fourth proportional to 543,337.20, 815,005.80 and 188,387.10 is: 282,580.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,337.20 : 815,005.80 = 188,387.10 : x
  2. Step 2: Convert to fraction form
    543,337.20/815,005.80 = 188,387.10/x
  3. Step 3: Cross multiply
    543,337.20x = 815,005.80 × 188,387.10
  4. Step 4: Simplify right side
    543,337.20x = 153,536,579,145.18
  5. Step 5: Solve for x
    x = 153,536,579,145.18/543,337.20
  6. Step 6: Final answer
    x = 282,580.65

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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.