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Finding the Fourth Proportional to 11,603.76, 17,412.60 and 5,029.92

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Solution

The fourth proportional to 11,603.76, 17,412.60 and 5,029.92 is: 7,547.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,603.76 : 17,412.60 = 5,029.92 : x
  2. Step 2: Convert to fraction form
    11,603.76/17,412.60 = 5,029.92/x
  3. Step 3: Cross multiply
    11,603.76x = 17,412.60 × 5,029.92
  4. Step 4: Simplify right side
    11,603.76x = 87,583,984.99
  5. Step 5: Solve for x
    x = 87,583,984.99/11,603.76
  6. Step 6: Final answer
    x = 7,547.90

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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.