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Finding the Fourth Proportional to 74,872.80, 103,299.30 and 46,576.68

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Solution

The fourth proportional to 74,872.80, 103,299.30 and 46,576.68 is: 64,260.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,872.80 : 103,299.30 = 46,576.68 : x
  2. Step 2: Convert to fraction form
    74,872.80/103,299.30 = 46,576.68/x
  3. Step 3: Cross multiply
    74,872.80x = 103,299.30 × 46,576.68
  4. Step 4: Simplify right side
    74,872.80x = 4,811,338,440.32
  5. Step 5: Solve for x
    x = 4,811,338,440.32/74,872.80
  6. Step 6: Final answer
    x = 64,260.16

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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.