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Finding the Fourth Proportional to 18,706,598.70, 25,807,968.97 and 11,361,661.26

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Solution

The fourth proportional to 18,706,598.70, 25,807,968.97 and 11,361,661.26 is: 15,674,757.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706,598.70 : 25,807,968.97 = 11,361,661.26 : x
  2. Step 2: Convert to fraction form
    18,706,598.70/25,807,968.97 = 11,361,661.26/x
  3. Step 3: Cross multiply
    18,706,598.70x = 25,807,968.97 × 11,361,661.26
  4. Step 4: Simplify right side
    18,706,598.70x = 293,221,401,245,731.06
  5. Step 5: Solve for x
    x = 293,221,401,245,731.06/18,706,598.70
  6. Step 6: Final answer
    x = 15,674,757.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.