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Finding the Fourth Proportional to 74,992.60, 112,505.10 and 22,407.40

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Solution

The fourth proportional to 74,992.60, 112,505.10 and 22,407.40 is: 33,615.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,992.60 : 112,505.10 = 22,407.40 : x
  2. Step 2: Convert to fraction form
    74,992.60/112,505.10 = 22,407.40/x
  3. Step 3: Cross multiply
    74,992.60x = 112,505.10 × 22,407.40
  4. Step 4: Simplify right side
    74,992.60x = 2,520,946,777.74
  5. Step 5: Solve for x
    x = 2,520,946,777.74/74,992.60
  6. Step 6: Final answer
    x = 33,615.94

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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.