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Finding the Fourth Proportional to 14,552.40, 21,844.80 and 7,991.40

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Solution

The fourth proportional to 14,552.40, 21,844.80 and 7,991.40 is: 11,996.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,552.40 : 21,844.80 = 7,991.40 : x
  2. Step 2: Convert to fraction form
    14,552.40/21,844.80 = 7,991.40/x
  3. Step 3: Cross multiply
    14,552.40x = 21,844.80 × 7,991.40
  4. Step 4: Simplify right side
    14,552.40x = 174,570,534.72
  5. Step 5: Solve for x
    x = 174,570,534.72/14,552.40
  6. Step 6: Final answer
    x = 11,996.00

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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.