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Finding the Fourth Proportional to 13,057,445.80, 18,299,319.80 and 13,057,445.80

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Solution

The fourth proportional to 13,057,445.80, 18,299,319.80 and 13,057,445.80 is: 18,299,319.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,057,445.80 : 18,299,319.80 = 13,057,445.80 : x
  2. Step 2: Convert to fraction form
    13,057,445.80/18,299,319.80 = 13,057,445.80/x
  3. Step 3: Cross multiply
    13,057,445.80x = 18,299,319.80 × 13,057,445.80
  4. Step 4: Simplify right side
    13,057,445.80x = 238,942,376,465,366.88
  5. Step 5: Solve for x
    x = 238,942,376,465,366.88/13,057,445.80
  6. Step 6: Final answer
    x = 18,299,319.80

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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.