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Finding the Fourth Proportional to 19,368.18, 26,754.03 and 15,606

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Solution

The fourth proportional to 19,368.18, 26,754.03 and 15,606 is: 21,557.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,368.18 : 26,754.03 = 15,606 : x
  2. Step 2: Convert to fraction form
    19,368.18/26,754.03 = 15,606/x
  3. Step 3: Cross multiply
    19,368.18x = 26,754.03 × 15,606
  4. Step 4: Simplify right side
    19,368.18x = 417,523,392.18
  5. Step 5: Solve for x
    x = 417,523,392.18/19,368.18
  6. Step 6: Final answer
    x = 21,557.18

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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.