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Finding the Fourth Proportional to 74,978.04, 112,466.76 and 22,387.44

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Solution

The fourth proportional to 74,978.04, 112,466.76 and 22,387.44 is: 33,581.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,978.04 : 112,466.76 = 22,387.44 : x
  2. Step 2: Convert to fraction form
    74,978.04/112,466.76 = 22,387.44/x
  3. Step 3: Cross multiply
    74,978.04x = 112,466.76 × 22,387.44
  4. Step 4: Simplify right side
    74,978.04x = 2,517,842,841.49
  5. Step 5: Solve for x
    x = 2,517,842,841.49/74,978.04
  6. Step 6: Final answer
    x = 33,581.07

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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.