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Finding the Fourth Proportional to 7,874,655.52, 11,812,968.24 and 3,081,725.68

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Solution

The fourth proportional to 7,874,655.52, 11,812,968.24 and 3,081,725.68 is: 4,622,973.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874,655.52 : 11,812,968.24 = 3,081,725.68 : x
  2. Step 2: Convert to fraction form
    7,874,655.52/11,812,968.24 = 3,081,725.68/x
  3. Step 3: Cross multiply
    7,874,655.52x = 11,812,968.24 × 3,081,725.68
  4. Step 4: Simplify right side
    7,874,655.52x = 36,404,327,582,232.41
  5. Step 5: Solve for x
    x = 36,404,327,582,232.41/7,874,655.52
  6. Step 6: Final answer
    x = 4,622,973.98

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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.