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Finding the Fourth Proportional to 19,614.50, 27,070.50 and 11,118.01

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Solution

The fourth proportional to 19,614.50, 27,070.50 and 11,118.01 is: 15,344.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,614.50 : 27,070.50 = 11,118.01 : x
  2. Step 2: Convert to fraction form
    19,614.50/27,070.50 = 11,118.01/x
  3. Step 3: Cross multiply
    19,614.50x = 27,070.50 × 11,118.01
  4. Step 4: Simplify right side
    19,614.50x = 300,970,114.48
  5. Step 5: Solve for x
    x = 300,970,114.48/19,614.50
  6. Step 6: Final answer
    x = 15,344.26

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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.