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Finding the Fourth Proportional to 648,778.60, 973,167.90 and 227,999.80

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Solution

The fourth proportional to 648,778.60, 973,167.90 and 227,999.80 is: 341,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,778.60 : 973,167.90 = 227,999.80 : x
  2. Step 2: Convert to fraction form
    648,778.60/973,167.90 = 227,999.80/x
  3. Step 3: Cross multiply
    648,778.60x = 973,167.90 × 227,999.80
  4. Step 4: Simplify right side
    648,778.60x = 221,882,086,566.42
  5. Step 5: Solve for x
    x = 221,882,086,566.42/648,778.60
  6. Step 6: Final answer
    x = 341,999.70

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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.