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Finding the Fourth Proportional to 198,458.17, 297,624.48 and 65,308.75

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Solution

The fourth proportional to 198,458.17, 297,624.48 and 65,308.75 is: 97,942.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,458.17 : 297,624.48 = 65,308.75 : x
  2. Step 2: Convert to fraction form
    198,458.17/297,624.48 = 65,308.75/x
  3. Step 3: Cross multiply
    198,458.17x = 297,624.48 × 65,308.75
  4. Step 4: Simplify right side
    198,458.17x = 19,437,482,758.20
  5. Step 5: Solve for x
    x = 19,437,482,758.20/198,458.17
  6. Step 6: Final answer
    x = 97,942.47

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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.