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Finding the Fourth Proportional to 74,690.78, 103,040.88 and 44,459.14

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Solution

The fourth proportional to 74,690.78, 103,040.88 and 44,459.14 is: 61,334.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,690.78 : 103,040.88 = 44,459.14 : x
  2. Step 2: Convert to fraction form
    74,690.78/103,040.88 = 44,459.14/x
  3. Step 3: Cross multiply
    74,690.78x = 103,040.88 × 44,459.14
  4. Step 4: Simplify right side
    74,690.78x = 4,581,108,909.64
  5. Step 5: Solve for x
    x = 4,581,108,909.64/74,690.78
  6. Step 6: Final answer
    x = 61,334.33

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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.