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Finding the Fourth Proportional to 74,111.76, 102,255.12 and 43,897.68

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Solution

The fourth proportional to 74,111.76, 102,255.12 and 43,897.68 is: 60,567.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,111.76 : 102,255.12 = 43,897.68 : x
  2. Step 2: Convert to fraction form
    74,111.76/102,255.12 = 43,897.68/x
  3. Step 3: Cross multiply
    74,111.76x = 102,255.12 × 43,897.68
  4. Step 4: Simplify right side
    74,111.76x = 4,488,762,536.12
  5. Step 5: Solve for x
    x = 4,488,762,536.12/74,111.76
  6. Step 6: Final answer
    x = 60,567.48

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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.