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Finding the Fourth Proportional to 28,508.40, 39,287.16 and 24,775.92

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Solution

The fourth proportional to 28,508.40, 39,287.16 and 24,775.92 is: 34,143.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.40 : 39,287.16 = 24,775.92 : x
  2. Step 2: Convert to fraction form
    28,508.40/39,287.16 = 24,775.92/x
  3. Step 3: Cross multiply
    28,508.40x = 39,287.16 × 24,775.92
  4. Step 4: Simplify right side
    28,508.40x = 973,375,533.19
  5. Step 5: Solve for x
    x = 973,375,533.19/28,508.40
  6. Step 6: Final answer
    x = 34,143.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.