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Finding the Fourth Proportional to 445,801.10, 668,701.65 and 256,844.30

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Solution

The fourth proportional to 445,801.10, 668,701.65 and 256,844.30 is: 385,266.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,801.10 : 668,701.65 = 256,844.30 : x
  2. Step 2: Convert to fraction form
    445,801.10/668,701.65 = 256,844.30/x
  3. Step 3: Cross multiply
    445,801.10x = 668,701.65 × 256,844.30
  4. Step 4: Simplify right side
    445,801.10x = 171,752,207,203.10
  5. Step 5: Solve for x
    x = 171,752,207,203.10/445,801.10
  6. Step 6: Final answer
    x = 385,266.45

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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.