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Finding the Fourth Proportional to 14,800.31, 20,424.78 and 8,085.99

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Solution

The fourth proportional to 14,800.31, 20,424.78 and 8,085.99 is: 11,158.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,800.31 : 20,424.78 = 8,085.99 : x
  2. Step 2: Convert to fraction form
    14,800.31/20,424.78 = 8,085.99/x
  3. Step 3: Cross multiply
    14,800.31x = 20,424.78 × 8,085.99
  4. Step 4: Simplify right side
    14,800.31x = 165,154,566.83
  5. Step 5: Solve for x
    x = 165,154,566.83/14,800.31
  6. Step 6: Final answer
    x = 11,158.86

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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.