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Finding the Fourth Proportional to 13,213,675.80, 18,541,661.40 and 13,213,675.80

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Solution

The fourth proportional to 13,213,675.80, 18,541,661.40 and 13,213,675.80 is: 18,541,661.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213,675.80 : 18,541,661.40 = 13,213,675.80 : x
  2. Step 2: Convert to fraction form
    13,213,675.80/18,541,661.40 = 13,213,675.80/x
  3. Step 3: Cross multiply
    13,213,675.80x = 18,541,661.40 × 13,213,675.80
  4. Step 4: Simplify right side
    13,213,675.80x = 245,003,502,532,974.12
  5. Step 5: Solve for x
    x = 245,003,502,532,974.12/13,213,675.80
  6. Step 6: Final answer
    x = 18,541,661.40

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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.