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Finding the Fourth Proportional to 13,952.60, 19,249.14 and 7,981.08

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Solution

The fourth proportional to 13,952.60, 19,249.14 and 7,981.08 is: 11,010.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,952.60 : 19,249.14 = 7,981.08 : x
  2. Step 2: Convert to fraction form
    13,952.60/19,249.14 = 7,981.08/x
  3. Step 3: Cross multiply
    13,952.60x = 19,249.14 × 7,981.08
  4. Step 4: Simplify right side
    13,952.60x = 153,628,926.27
  5. Step 5: Solve for x
    x = 153,628,926.27/13,952.60
  6. Step 6: Final answer
    x = 11,010.77

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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.