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Finding the Fourth Proportional to 193,658.91, 290,488.16 and 67,299.17

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Solution

The fourth proportional to 193,658.91, 290,488.16 and 67,299.17 is: 100,948.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,658.91 : 290,488.16 = 67,299.17 : x
  2. Step 2: Convert to fraction form
    193,658.91/290,488.16 = 67,299.17/x
  3. Step 3: Cross multiply
    193,658.91x = 290,488.16 × 67,299.17
  4. Step 4: Simplify right side
    193,658.91x = 19,549,610,273.89
  5. Step 5: Solve for x
    x = 19,549,610,273.89/193,658.91
  6. Step 6: Final answer
    x = 100,948.67

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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.