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Finding the Fourth Proportional to 7,318,672.83, 10,978,547.90 and 1,927,285.29

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Solution

The fourth proportional to 7,318,672.83, 10,978,547.90 and 1,927,285.29 is: 2,891,069.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318,672.83 : 10,978,547.90 = 1,927,285.29 : x
  2. Step 2: Convert to fraction form
    7,318,672.83/10,978,547.90 = 1,927,285.29/x
  3. Step 3: Cross multiply
    7,318,672.83x = 10,978,547.90 × 1,927,285.29
  4. Step 4: Simplify right side
    7,318,672.83x = 21,158,793,863,593.96
  5. Step 5: Solve for x
    x = 21,158,793,863,593.96/7,318,672.83
  6. Step 6: Final answer
    x = 2,891,069.78

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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.