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Finding the Fourth Proportional to 74,655, 103,023.90 and 41,121

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Solution

The fourth proportional to 74,655, 103,023.90 and 41,121 is: 56,746.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,655 : 103,023.90 = 41,121 : x
  2. Step 2: Convert to fraction form
    74,655/103,023.90 = 41,121/x
  3. Step 3: Cross multiply
    74,655x = 103,023.90 × 41,121
  4. Step 4: Simplify right side
    74,655x = 4,236,445,791.90
  5. Step 5: Solve for x
    x = 4,236,445,791.90/74,655
  6. Step 6: Final answer
    x = 56,746.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.