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Finding the Fourth Proportional to 6,603,657.60, 9,905,486.40 and 4,212,173.10

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Solution

The fourth proportional to 6,603,657.60, 9,905,486.40 and 4,212,173.10 is: 6,318,259.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603,657.60 : 9,905,486.40 = 4,212,173.10 : x
  2. Step 2: Convert to fraction form
    6,603,657.60/9,905,486.40 = 4,212,173.10/x
  3. Step 3: Cross multiply
    6,603,657.60x = 9,905,486.40 × 4,212,173.10
  4. Step 4: Simplify right side
    6,603,657.60x = 41,723,623,356,495.84
  5. Step 5: Solve for x
    x = 41,723,623,356,495.84/6,603,657.60
  6. Step 6: Final answer
    x = 6,318,259.65

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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.