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Finding the Fourth Proportional to 17,569.18, 26,358.09 and 7,039.90

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Solution

The fourth proportional to 17,569.18, 26,358.09 and 7,039.90 is: 10,561.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,569.18 : 26,358.09 = 7,039.90 : x
  2. Step 2: Convert to fraction form
    17,569.18/26,358.09 = 7,039.90/x
  3. Step 3: Cross multiply
    17,569.18x = 26,358.09 × 7,039.90
  4. Step 4: Simplify right side
    17,569.18x = 185,558,317.79
  5. Step 5: Solve for x
    x = 185,558,317.79/17,569.18
  6. Step 6: Final answer
    x = 10,561.58

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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.