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Finding the Fourth Proportional to 14,353.06, 19,807.41 and 8,687.74

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Solution

The fourth proportional to 14,353.06, 19,807.41 and 8,687.74 is: 11,989.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,353.06 : 19,807.41 = 8,687.74 : x
  2. Step 2: Convert to fraction form
    14,353.06/19,807.41 = 8,687.74/x
  3. Step 3: Cross multiply
    14,353.06x = 19,807.41 × 8,687.74
  4. Step 4: Simplify right side
    14,353.06x = 172,081,628.15
  5. Step 5: Solve for x
    x = 172,081,628.15/14,353.06
  6. Step 6: Final answer
    x = 11,989.19

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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.