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Finding the Fourth Proportional to 59,806.30, 89,721.60 and 20,367.40

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Solution

The fourth proportional to 59,806.30, 89,721.60 and 20,367.40 is: 30,555.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,806.30 : 89,721.60 = 20,367.40 : x
  2. Step 2: Convert to fraction form
    59,806.30/89,721.60 = 20,367.40/x
  3. Step 3: Cross multiply
    59,806.30x = 89,721.60 × 20,367.40
  4. Step 4: Simplify right side
    59,806.30x = 1,827,395,715.84
  5. Step 5: Solve for x
    x = 1,827,395,715.84/59,806.30
  6. Step 6: Final answer
    x = 30,555.24

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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.