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Finding the Fourth Proportional to 18,097.61, 24,973.79 and 9,921.06

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Solution

The fourth proportional to 18,097.61, 24,973.79 and 9,921.06 is: 13,690.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,097.61 : 24,973.79 = 9,921.06 : x
  2. Step 2: Convert to fraction form
    18,097.61/24,973.79 = 9,921.06/x
  3. Step 3: Cross multiply
    18,097.61x = 24,973.79 × 9,921.06
  4. Step 4: Simplify right side
    18,097.61x = 247,766,419.41
  5. Step 5: Solve for x
    x = 247,766,419.41/18,097.61
  6. Step 6: Final answer
    x = 13,690.56

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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.