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Finding the Fourth Proportional to 6,603,735.60, 9,905,603.40 and 4,212,251.10

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Solution

The fourth proportional to 6,603,735.60, 9,905,603.40 and 4,212,251.10 is: 6,318,376.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603,735.60 : 9,905,603.40 = 4,212,251.10 : x
  2. Step 2: Convert to fraction form
    6,603,735.60/9,905,603.40 = 4,212,251.10/x
  3. Step 3: Cross multiply
    6,603,735.60x = 9,905,603.40 × 4,212,251.10
  4. Step 4: Simplify right side
    6,603,735.60x = 41,724,888,817,813.73
  5. Step 5: Solve for x
    x = 41,724,888,817,813.73/6,603,735.60
  6. Step 6: Final answer
    x = 6,318,376.65

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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.