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Finding the Fourth Proportional to 6,884,978.05, 10,318,019.14 and 4,356,106.21

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Solution

The fourth proportional to 6,884,978.05, 10,318,019.14 and 4,356,106.21 is: 6,528,181.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,884,978.05 : 10,318,019.14 = 4,356,106.21 : x
  2. Step 2: Convert to fraction form
    6,884,978.05/10,318,019.14 = 4,356,106.21/x
  3. Step 3: Cross multiply
    6,884,978.05x = 10,318,019.14 × 4,356,106.21
  4. Step 4: Simplify right side
    6,884,978.05x = 44,946,387,250,652.86
  5. Step 5: Solve for x
    x = 44,946,387,250,652.86/6,884,978.05
  6. Step 6: Final answer
    x = 6,528,181.63

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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.