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Finding the Fourth Proportional to 517,041.68, 713,517.49 and 290,687.18

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Solution

The fourth proportional to 517,041.68, 713,517.49 and 290,687.18 is: 401,148.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,041.68 : 713,517.49 = 290,687.18 : x
  2. Step 2: Convert to fraction form
    517,041.68/713,517.49 = 290,687.18/x
  3. Step 3: Cross multiply
    517,041.68x = 713,517.49 × 290,687.18
  4. Step 4: Simplify right side
    517,041.68x = 207,410,387,048.78
  5. Step 5: Solve for x
    x = 207,410,387,048.78/517,041.68
  6. Step 6: Final answer
    x = 401,148.29

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1.5x scale

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.