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Finding the Fourth Proportional to 14,916.98, 20,585.97 and 8,203.13

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Solution

The fourth proportional to 14,916.98, 20,585.97 and 8,203.13 is: 11,320.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,916.98 : 20,585.97 = 8,203.13 : x
  2. Step 2: Convert to fraction form
    14,916.98/20,585.97 = 8,203.13/x
  3. Step 3: Cross multiply
    14,916.98x = 20,585.97 × 8,203.13
  4. Step 4: Simplify right side
    14,916.98x = 168,869,362.35
  5. Step 5: Solve for x
    x = 168,869,362.35/14,916.98
  6. Step 6: Final answer
    x = 11,320.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.