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Finding the Fourth Proportional to 706,665.40, 975,158.56 and 396,539.06

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Solution

The fourth proportional to 706,665.40, 975,158.56 and 396,539.06 is: 547,201.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,665.40 : 975,158.56 = 396,539.06 : x
  2. Step 2: Convert to fraction form
    706,665.40/975,158.56 = 396,539.06/x
  3. Step 3: Cross multiply
    706,665.40x = 975,158.56 × 396,539.06
  4. Step 4: Simplify right side
    706,665.40x = 386,688,458,733.35
  5. Step 5: Solve for x
    x = 386,688,458,733.35/706,665.40
  6. Step 6: Final answer
    x = 547,201.63

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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.