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Finding the Fourth Proportional to 706,568.41, 975,064.88 and 396,428.18

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Solution

The fourth proportional to 706,568.41, 975,064.88 and 396,428.18 is: 547,071.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,568.41 : 975,064.88 = 396,428.18 : x
  2. Step 2: Convert to fraction form
    706,568.41/975,064.88 = 396,428.18/x
  3. Step 3: Cross multiply
    706,568.41x = 975,064.88 × 396,428.18
  4. Step 4: Simplify right side
    706,568.41x = 386,543,195,760.32
  5. Step 5: Solve for x
    x = 386,543,195,760.32/706,568.41
  6. Step 6: Final answer
    x = 547,071.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.