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Finding the Fourth Proportional to 25,387.92, 38,026.42 and 10,551.87

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Solution

The fourth proportional to 25,387.92, 38,026.42 and 10,551.87 is: 15,804.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,387.92 : 38,026.42 = 10,551.87 : x
  2. Step 2: Convert to fraction form
    25,387.92/38,026.42 = 10,551.87/x
  3. Step 3: Cross multiply
    25,387.92x = 38,026.42 × 10,551.87
  4. Step 4: Simplify right side
    25,387.92x = 401,249,814.03
  5. Step 5: Solve for x
    x = 401,249,814.03/25,387.92
  6. Step 6: Final answer
    x = 15,804.75

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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.