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Finding the Fourth Proportional to 621,799.20, 932,698.80 and 201,117.60

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Solution

The fourth proportional to 621,799.20, 932,698.80 and 201,117.60 is: 301,676.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,799.20 : 932,698.80 = 201,117.60 : x
  2. Step 2: Convert to fraction form
    621,799.20/932,698.80 = 201,117.60/x
  3. Step 3: Cross multiply
    621,799.20x = 932,698.80 × 201,117.60
  4. Step 4: Simplify right side
    621,799.20x = 187,582,144,178.88
  5. Step 5: Solve for x
    x = 187,582,144,178.88/621,799.20
  6. Step 6: Final answer
    x = 301,676.40

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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.