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Finding the Fourth Proportional to 572,519.10, 858,778.65 and 362,394.30

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Solution

The fourth proportional to 572,519.10, 858,778.65 and 362,394.30 is: 543,591.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,519.10 : 858,778.65 = 362,394.30 : x
  2. Step 2: Convert to fraction form
    572,519.10/858,778.65 = 362,394.30/x
  3. Step 3: Cross multiply
    572,519.10x = 858,778.65 × 362,394.30
  4. Step 4: Simplify right side
    572,519.10x = 311,216,487,721.70
  5. Step 5: Solve for x
    x = 311,216,487,721.70/572,519.10
  6. Step 6: Final answer
    x = 543,591.45

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Double scale
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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.