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Finding the Fourth Proportional to 982,695.80, 1,474,043.70 and 317,847.80

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Solution

The fourth proportional to 982,695.80, 1,474,043.70 and 317,847.80 is: 476,771.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    982,695.80 : 1,474,043.70 = 317,847.80 : x
  2. Step 2: Convert to fraction form
    982,695.80/1,474,043.70 = 317,847.80/x
  3. Step 3: Cross multiply
    982,695.80x = 1,474,043.70 × 317,847.80
  4. Step 4: Simplify right side
    982,695.80x = 468,521,547,148.86
  5. Step 5: Solve for x
    x = 468,521,547,148.86/982,695.80
  6. Step 6: Final answer
    x = 476,771.70

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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.