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Finding the Fourth Proportional to 826,616.10, 1,239,924.15 and 353,349.30

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Solution

The fourth proportional to 826,616.10, 1,239,924.15 and 353,349.30 is: 530,023.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,616.10 : 1,239,924.15 = 353,349.30 : x
  2. Step 2: Convert to fraction form
    826,616.10/1,239,924.15 = 353,349.30/x
  3. Step 3: Cross multiply
    826,616.10x = 1,239,924.15 × 353,349.30
  4. Step 4: Simplify right side
    826,616.10x = 438,126,330,455.60
  5. Step 5: Solve for x
    x = 438,126,330,455.60/826,616.10
  6. Step 6: Final answer
    x = 530,023.95

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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.