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Finding the Fourth Proportional to 615,902.20, 923,853.30 and 363,959.80

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Solution

The fourth proportional to 615,902.20, 923,853.30 and 363,959.80 is: 545,939.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,902.20 : 923,853.30 = 363,959.80 : x
  2. Step 2: Convert to fraction form
    615,902.20/923,853.30 = 363,959.80/x
  3. Step 3: Cross multiply
    615,902.20x = 923,853.30 × 363,959.80
  4. Step 4: Simplify right side
    615,902.20x = 336,245,462,297.34
  5. Step 5: Solve for x
    x = 336,245,462,297.34/615,902.20
  6. Step 6: Final answer
    x = 545,939.70

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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.