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Finding the Fourth Proportional to 74,944.62, 103,420.71 and 43,123.77

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Solution

The fourth proportional to 74,944.62, 103,420.71 and 43,123.77 is: 59,509.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,944.62 : 103,420.71 = 43,123.77 : x
  2. Step 2: Convert to fraction form
    74,944.62/103,420.71 = 43,123.77/x
  3. Step 3: Cross multiply
    74,944.62x = 103,420.71 × 43,123.77
  4. Step 4: Simplify right side
    74,944.62x = 4,459,890,911.28
  5. Step 5: Solve for x
    x = 4,459,890,911.28/74,944.62
  6. Step 6: Final answer
    x = 59,509.15

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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.