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Finding the Fourth Proportional to 59,788.81, 89,689.28 and 20,348.69

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Solution

The fourth proportional to 59,788.81, 89,689.28 and 20,348.69 is: 30,525.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,788.81 : 89,689.28 = 20,348.69 : x
  2. Step 2: Convert to fraction form
    59,788.81/89,689.28 = 20,348.69/x
  3. Step 3: Cross multiply
    59,788.81x = 89,689.28 × 20,348.69
  4. Step 4: Simplify right side
    59,788.81x = 1,825,059,355.04
  5. Step 5: Solve for x
    x = 1,825,059,355.04/59,788.81
  6. Step 6: Final answer
    x = 30,525.10

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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.