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Finding the Fourth Proportional to 6,640,568.14, 9,974,127.30 and 6,422,655.46

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Solution

The fourth proportional to 6,640,568.14, 9,974,127.30 and 6,422,655.46 is: 9,646,822.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640,568.14 : 9,974,127.30 = 6,422,655.46 : x
  2. Step 2: Convert to fraction form
    6,640,568.14/9,974,127.30 = 6,422,655.46/x
  3. Step 3: Cross multiply
    6,640,568.14x = 9,974,127.30 × 6,422,655.46
  4. Step 4: Simplify right side
    6,640,568.14x = 64,060,383,162,080.06
  5. Step 5: Solve for x
    x = 64,060,383,162,080.06/6,640,568.14
  6. Step 6: Final answer
    x = 9,646,822.65

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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.