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Finding the Fourth Proportional to 626,396.74, 864,798.75 and 411,906.71

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Solution

The fourth proportional to 626,396.74, 864,798.75 and 411,906.71 is: 568,675.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,396.74 : 864,798.75 = 411,906.71 : x
  2. Step 2: Convert to fraction form
    626,396.74/864,798.75 = 411,906.71/x
  3. Step 3: Cross multiply
    626,396.74x = 864,798.75 × 411,906.71
  4. Step 4: Simplify right side
    626,396.74x = 356,216,407,924.61
  5. Step 5: Solve for x
    x = 356,216,407,924.61/626,396.74
  6. Step 6: Final answer
    x = 568,675.39

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.