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Finding the Fourth Proportional to 6,652,362.70, 9,978,544.05 and 4,260,878.20

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Solution

The fourth proportional to 6,652,362.70, 9,978,544.05 and 4,260,878.20 is: 6,391,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652,362.70 : 9,978,544.05 = 4,260,878.20 : x
  2. Step 2: Convert to fraction form
    6,652,362.70/9,978,544.05 = 4,260,878.20/x
  3. Step 3: Cross multiply
    6,652,362.70x = 9,978,544.05 × 4,260,878.20
  4. Step 4: Simplify right side
    6,652,362.70x = 42,517,360,810,384.72
  5. Step 5: Solve for x
    x = 42,517,360,810,384.72/6,652,362.70
  6. Step 6: Final answer
    x = 6,391,317.30

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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.