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Finding the Fourth Proportional to 15,238.65, 22,855.17 and 6,916.66

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Solution

The fourth proportional to 15,238.65, 22,855.17 and 6,916.66 is: 10,373.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,238.65 : 22,855.17 = 6,916.66 : x
  2. Step 2: Convert to fraction form
    15,238.65/22,855.17 = 6,916.66/x
  3. Step 3: Cross multiply
    15,238.65x = 22,855.17 × 6,916.66
  4. Step 4: Simplify right side
    15,238.65x = 158,081,440.13
  5. Step 5: Solve for x
    x = 158,081,440.13/15,238.65
  6. Step 6: Final answer
    x = 10,373.72

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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.