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Finding the Fourth Proportional to 684,183.65, 944,323.31 and 397,868.90

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Solution

The fourth proportional to 684,183.65, 944,323.31 and 397,868.90 is: 549,146.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,183.65 : 944,323.31 = 397,868.90 : x
  2. Step 2: Convert to fraction form
    684,183.65/944,323.31 = 397,868.90/x
  3. Step 3: Cross multiply
    684,183.65x = 944,323.31 × 397,868.90
  4. Step 4: Simplify right side
    684,183.65x = 375,716,872,867.12
  5. Step 5: Solve for x
    x = 375,716,872,867.12/684,183.65
  6. Step 6: Final answer
    x = 549,146.24

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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.