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Finding the Fourth Proportional to 12,969.68, 19,417.78 and 10,081.76

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Solution

The fourth proportional to 12,969.68, 19,417.78 and 10,081.76 is: 15,094.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,969.68 : 19,417.78 = 10,081.76 : x
  2. Step 2: Convert to fraction form
    12,969.68/19,417.78 = 10,081.76/x
  3. Step 3: Cross multiply
    12,969.68x = 19,417.78 × 10,081.76
  4. Step 4: Simplify right side
    12,969.68x = 195,765,397.69
  5. Step 5: Solve for x
    x = 195,765,397.69/12,969.68
  6. Step 6: Final answer
    x = 15,094.08

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.