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Finding the Fourth Proportional to 6,652,267.60, 9,978,401.40 and 5,217,376.90

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Solution

The fourth proportional to 6,652,267.60, 9,978,401.40 and 5,217,376.90 is: 7,826,065.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652,267.60 : 9,978,401.40 = 5,217,376.90 : x
  2. Step 2: Convert to fraction form
    6,652,267.60/9,978,401.40 = 5,217,376.90/x
  3. Step 3: Cross multiply
    6,652,267.60x = 9,978,401.40 × 5,217,376.90
  4. Step 4: Simplify right side
    6,652,267.60x = 52,061,080,963,287.66
  5. Step 5: Solve for x
    x = 52,061,080,963,287.66/6,652,267.60
  6. Step 6: Final answer
    x = 7,826,065.35

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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.