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Finding the Fourth Proportional to 61,869.80, 92,804.70 and 22,428.20

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Solution

The fourth proportional to 61,869.80, 92,804.70 and 22,428.20 is: 33,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,869.80 : 92,804.70 = 22,428.20 : x
  2. Step 2: Convert to fraction form
    61,869.80/92,804.70 = 22,428.20/x
  3. Step 3: Cross multiply
    61,869.80x = 92,804.70 × 22,428.20
  4. Step 4: Simplify right side
    61,869.80x = 2,081,442,372.54
  5. Step 5: Solve for x
    x = 2,081,442,372.54/61,869.80
  6. Step 6: Final answer
    x = 33,642.30

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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.