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Finding the Fourth Proportional to 21,360.76, 32,040.06 and 7,508.68

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Solution

The fourth proportional to 21,360.76, 32,040.06 and 7,508.68 is: 11,262.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.76 : 32,040.06 = 7,508.68 : x
  2. Step 2: Convert to fraction form
    21,360.76/32,040.06 = 7,508.68/x
  3. Step 3: Cross multiply
    21,360.76x = 32,040.06 × 7,508.68
  4. Step 4: Simplify right side
    21,360.76x = 240,578,557.72
  5. Step 5: Solve for x
    x = 240,578,557.72/21,360.76
  6. Step 6: Final answer
    x = 11,262.64

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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.