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Finding the Fourth Proportional to 19,294.14, 28,920.69 and 9,292.65

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Solution

The fourth proportional to 19,294.14, 28,920.69 and 9,292.65 is: 13,929.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,294.14 : 28,920.69 = 9,292.65 : x
  2. Step 2: Convert to fraction form
    19,294.14/28,920.69 = 9,292.65/x
  3. Step 3: Cross multiply
    19,294.14x = 28,920.69 × 9,292.65
  4. Step 4: Simplify right side
    19,294.14x = 268,749,849.93
  5. Step 5: Solve for x
    x = 268,749,849.93/19,294.14
  6. Step 6: Final answer
    x = 13,929.09

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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.