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Finding the Fourth Proportional to 69,302.20, 103,693.80 and 49,357.80

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Solution

The fourth proportional to 69,302.20, 103,693.80 and 49,357.80 is: 73,851.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,302.20 : 103,693.80 = 49,357.80 : x
  2. Step 2: Convert to fraction form
    69,302.20/103,693.80 = 49,357.80/x
  3. Step 3: Cross multiply
    69,302.20x = 103,693.80 × 49,357.80
  4. Step 4: Simplify right side
    69,302.20x = 5,118,097,841.64
  5. Step 5: Solve for x
    x = 5,118,097,841.64/69,302.20
  6. Step 6: Final answer
    x = 73,851.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.