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Finding the Fourth Proportional to 102,578.80, 153,852.80 and 32,449

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Solution

The fourth proportional to 102,578.80, 153,852.80 and 32,449 is: 48,668.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,578.80 : 153,852.80 = 32,449 : x
  2. Step 2: Convert to fraction form
    102,578.80/153,852.80 = 32,449/x
  3. Step 3: Cross multiply
    102,578.80x = 153,852.80 × 32,449
  4. Step 4: Simplify right side
    102,578.80x = 4,992,369,507.20
  5. Step 5: Solve for x
    x = 4,992,369,507.20/102,578.80
  6. Step 6: Final answer
    x = 48,668.63

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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.