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Finding the Fourth Proportional to 568,631.40, 784,427.76 and 339,026.76

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Solution

The fourth proportional to 568,631.40, 784,427.76 and 339,026.76 is: 467,687.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,631.40 : 784,427.76 = 339,026.76 : x
  2. Step 2: Convert to fraction form
    568,631.40/784,427.76 = 339,026.76/x
  3. Step 3: Cross multiply
    568,631.40x = 784,427.76 × 339,026.76
  4. Step 4: Simplify right side
    568,631.40x = 265,942,001,926.86
  5. Step 5: Solve for x
    x = 265,942,001,926.86/568,631.40
  6. Step 6: Final answer
    x = 467,687.86

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.