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Finding the Fourth Proportional to 7,318,628.69, 10,978,482.29 and 1,927,241.82

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Solution

The fourth proportional to 7,318,628.69, 10,978,482.29 and 1,927,241.82 is: 2,891,004.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318,628.69 : 10,978,482.29 = 1,927,241.82 : x
  2. Step 2: Convert to fraction form
    7,318,628.69/10,978,482.29 = 1,927,241.82/x
  3. Step 3: Cross multiply
    7,318,628.69x = 10,978,482.29 × 1,927,241.82
  4. Step 4: Simplify right side
    7,318,628.69x = 21,158,190,179,781.16
  5. Step 5: Solve for x
    x = 21,158,190,179,781.16/7,318,628.69
  6. Step 6: Final answer
    x = 2,891,004.73

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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.