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Finding the Fourth Proportional to 713,171.70, 1,069,806.77 and 207,736.88

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Solution

The fourth proportional to 713,171.70, 1,069,806.77 and 207,736.88 is: 311,619.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,171.70 : 1,069,806.77 = 207,736.88 : x
  2. Step 2: Convert to fraction form
    713,171.70/1,069,806.77 = 207,736.88/x
  3. Step 3: Cross multiply
    713,171.70x = 1,069,806.77 × 207,736.88
  4. Step 4: Simplify right side
    713,171.70x = 222,238,314,214.96
  5. Step 5: Solve for x
    x = 222,238,314,214.96/713,171.70
  6. Step 6: Final answer
    x = 311,619.65

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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.