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Finding the Fourth Proportional to 52,698.80, 79,048.31 and 13,255.65

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Solution

The fourth proportional to 52,698.80, 79,048.31 and 13,255.65 is: 19,883.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,698.80 : 79,048.31 = 13,255.65 : x
  2. Step 2: Convert to fraction form
    52,698.80/79,048.31 = 13,255.65/x
  3. Step 3: Cross multiply
    52,698.80x = 79,048.31 × 13,255.65
  4. Step 4: Simplify right side
    52,698.80x = 1,047,836,664.17
  5. Step 5: Solve for x
    x = 1,047,836,664.17/52,698.80
  6. Step 6: Final answer
    x = 19,883.50

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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.