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Finding the Fourth Proportional to 74,642.74, 103,000.21 and 44,423.19

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Solution

The fourth proportional to 74,642.74, 103,000.21 and 44,423.19 is: 61,299.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,642.74 : 103,000.21 = 44,423.19 : x
  2. Step 2: Convert to fraction form
    74,642.74/103,000.21 = 44,423.19/x
  3. Step 3: Cross multiply
    74,642.74x = 103,000.21 × 44,423.19
  4. Step 4: Simplify right side
    74,642.74x = 4,575,597,787.81
  5. Step 5: Solve for x
    x = 4,575,597,787.81/74,642.74
  6. Step 6: Final answer
    x = 61,299.97

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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.