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Finding the Fourth Proportional to 13,168,531.20, 18,448,540.80 and 13,168,531.20

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Solution

The fourth proportional to 13,168,531.20, 18,448,540.80 and 13,168,531.20 is: 18,448,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168,531.20 : 18,448,540.80 = 13,168,531.20 : x
  2. Step 2: Convert to fraction form
    13,168,531.20/18,448,540.80 = 13,168,531.20/x
  3. Step 3: Cross multiply
    13,168,531.20x = 18,448,540.80 × 13,168,531.20
  4. Step 4: Simplify right side
    13,168,531.20x = 242,940,185,119,272.97
  5. Step 5: Solve for x
    x = 242,940,185,119,272.97/13,168,531.20
  6. Step 6: Final answer
    x = 18,448,540.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.