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Finding the Fourth Proportional to 198,316.81, 297,593.40 and 71,966.91

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Solution

The fourth proportional to 198,316.81, 297,593.40 and 71,966.91 is: 107,993.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,316.81 : 297,593.40 = 71,966.91 : x
  2. Step 2: Convert to fraction form
    198,316.81/297,593.40 = 71,966.91/x
  3. Step 3: Cross multiply
    198,316.81x = 297,593.40 × 71,966.91
  4. Step 4: Simplify right side
    198,316.81x = 21,416,876,690.41
  5. Step 5: Solve for x
    x = 21,416,876,690.41/198,316.81
  6. Step 6: Final answer
    x = 107,993.25

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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.