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Finding the Fourth Proportional to 517,340.65, 713,953.46 and 290,986.15

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Solution

The fourth proportional to 517,340.65, 713,953.46 and 290,986.15 is: 401,574.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,340.65 : 713,953.46 = 290,986.15 : x
  2. Step 2: Convert to fraction form
    517,340.65/713,953.46 = 290,986.15/x
  3. Step 3: Cross multiply
    517,340.65x = 713,953.46 × 290,986.15
  4. Step 4: Simplify right side
    517,340.65x = 207,750,568,604.58
  5. Step 5: Solve for x
    x = 207,750,568,604.58/517,340.65
  6. Step 6: Final answer
    x = 401,574.03

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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.