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Finding the Fourth Proportional to 14,914.40, 22,339.20 and 11,998.40

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Solution

The fourth proportional to 14,914.40, 22,339.20 and 11,998.40 is: 17,971.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,914.40 : 22,339.20 = 11,998.40 : x
  2. Step 2: Convert to fraction form
    14,914.40/22,339.20 = 11,998.40/x
  3. Step 3: Cross multiply
    14,914.40x = 22,339.20 × 11,998.40
  4. Step 4: Simplify right side
    14,914.40x = 268,034,657.28
  5. Step 5: Solve for x
    x = 268,034,657.28/14,914.40
  6. Step 6: Final answer
    x = 17,971.53

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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.