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Finding the Fourth Proportional to 636,308.04, 955,153.68 and 257,489.55

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Solution

The fourth proportional to 636,308.04, 955,153.68 and 257,489.55 is: 386,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,308.04 : 955,153.68 = 257,489.55 : x
  2. Step 2: Convert to fraction form
    636,308.04/955,153.68 = 257,489.55/x
  3. Step 3: Cross multiply
    636,308.04x = 955,153.68 × 257,489.55
  4. Step 4: Simplify right side
    636,308.04x = 245,942,091,244.04
  5. Step 5: Solve for x
    x = 245,942,091,244.04/636,308.04
  6. Step 6: Final answer
    x = 386,514.20

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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.