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Finding the Fourth Proportional to 443,920.25, 612,609.95 and 242,716.25

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Solution

The fourth proportional to 443,920.25, 612,609.95 and 242,716.25 is: 334,948.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,920.25 : 612,609.95 = 242,716.25 : x
  2. Step 2: Convert to fraction form
    443,920.25/612,609.95 = 242,716.25/x
  3. Step 3: Cross multiply
    443,920.25x = 612,609.95 × 242,716.25
  4. Step 4: Simplify right side
    443,920.25x = 148,690,389,776.69
  5. Step 5: Solve for x
    x = 148,690,389,776.69/443,920.25
  6. Step 6: Final answer
    x = 334,948.43

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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.