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Finding the Fourth Proportional to 571,766.50, 857,649.75 and 391,674.34

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Solution

The fourth proportional to 571,766.50, 857,649.75 and 391,674.34 is: 587,511.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,766.50 : 857,649.75 = 391,674.34 : x
  2. Step 2: Convert to fraction form
    571,766.50/857,649.75 = 391,674.34/x
  3. Step 3: Cross multiply
    571,766.50x = 857,649.75 × 391,674.34
  4. Step 4: Simplify right side
    571,766.50x = 335,919,399,782.42
  5. Step 5: Solve for x
    x = 335,919,399,782.42/571,766.50
  6. Step 6: Final answer
    x = 587,511.51

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