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Finding the Fourth Proportional to 621,844.80, 932,767.20 and 266,798.40

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Solution

The fourth proportional to 621,844.80, 932,767.20 and 266,798.40 is: 400,197.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,844.80 : 932,767.20 = 266,798.40 : x
  2. Step 2: Convert to fraction form
    621,844.80/932,767.20 = 266,798.40/x
  3. Step 3: Cross multiply
    621,844.80x = 932,767.20 × 266,798.40
  4. Step 4: Simplify right side
    621,844.80x = 248,860,796,532.48
  5. Step 5: Solve for x
    x = 248,860,796,532.48/621,844.80
  6. Step 6: Final answer
    x = 400,197.60

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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.