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Finding the Fourth Proportional to 6,603,927.20, 9,905,890.80 and 6,603,927.20

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Solution

The fourth proportional to 6,603,927.20, 9,905,890.80 and 6,603,927.20 is: 9,905,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603,927.20 : 9,905,890.80 = 6,603,927.20 : x
  2. Step 2: Convert to fraction form
    6,603,927.20/9,905,890.80 = 6,603,927.20/x
  3. Step 3: Cross multiply
    6,603,927.20x = 9,905,890.80 × 6,603,927.20
  4. Step 4: Simplify right side
    6,603,927.20x = 65,417,781,694,349.77
  5. Step 5: Solve for x
    x = 65,417,781,694,349.77/6,603,927.20
  6. Step 6: Final answer
    x = 9,905,890.80

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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.