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Finding the Fourth Proportional to 5,328,307.70, 7,985,900.55 and 3,622,447.70

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Solution

The fourth proportional to 5,328,307.70, 7,985,900.55 and 3,622,447.70 is: 5,429,211.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328,307.70 : 7,985,900.55 = 3,622,447.70 : x
  2. Step 2: Convert to fraction form
    5,328,307.70/7,985,900.55 = 3,622,447.70/x
  3. Step 3: Cross multiply
    5,328,307.70x = 7,985,900.55 × 3,622,447.70
  4. Step 4: Simplify right side
    5,328,307.70x = 28,928,507,079,776.23
  5. Step 5: Solve for x
    x = 28,928,507,079,776.23/5,328,307.70
  6. Step 6: Final answer
    x = 5,429,211.06

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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.