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Finding the Fourth Proportional to 51,801.77, 71,479.71 and 29,139.99

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Solution

The fourth proportional to 51,801.77, 71,479.71 and 29,139.99 is: 40,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,801.77 : 71,479.71 = 29,139.99 : x
  2. Step 2: Convert to fraction form
    51,801.77/71,479.71 = 29,139.99/x
  3. Step 3: Cross multiply
    51,801.77x = 71,479.71 × 29,139.99
  4. Step 4: Simplify right side
    51,801.77x = 2,082,918,034.60
  5. Step 5: Solve for x
    x = 2,082,918,034.60/51,801.77
  6. Step 6: Final answer
    x = 40,209.40

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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.