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Finding the Fourth Proportional to 61,213,401.70, 91,820,102.55 and 61,213,401.70

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Solution

The fourth proportional to 61,213,401.70, 91,820,102.55 and 61,213,401.70 is: 91,820,102.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,213,401.70 : 91,820,102.55 = 61,213,401.70 : x
  2. Step 2: Convert to fraction form
    61,213,401.70/91,820,102.55 = 61,213,401.70/x
  3. Step 3: Cross multiply
    61,213,401.70x = 91,820,102.55 × 61,213,401.70
  4. Step 4: Simplify right side
    61,213,401.70x = 5,620,620,821,528,344
  5. Step 5: Solve for x
    x = 5,620,620,821,528,344/61,213,401.70
  6. Step 6: Final answer
    x = 91,820,102.55

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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.