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Finding the Fourth Proportional to 18,056.97, 24,918.17 and 9,990.93

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Solution

The fourth proportional to 18,056.97, 24,918.17 and 9,990.93 is: 13,787.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,056.97 : 24,918.17 = 9,990.93 : x
  2. Step 2: Convert to fraction form
    18,056.97/24,918.17 = 9,990.93/x
  3. Step 3: Cross multiply
    18,056.97x = 24,918.17 × 9,990.93
  4. Step 4: Simplify right side
    18,056.97x = 248,955,642.24
  5. Step 5: Solve for x
    x = 248,955,642.24/18,056.97
  6. Step 6: Final answer
    x = 13,787.23

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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.