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Finding the Fourth Proportional to 591,686.56, 888,317.16 and 311,400.64

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Solution

The fourth proportional to 591,686.56, 888,317.16 and 311,400.64 is: 467,515.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,686.56 : 888,317.16 = 311,400.64 : x
  2. Step 2: Convert to fraction form
    591,686.56/888,317.16 = 311,400.64/x
  3. Step 3: Cross multiply
    591,686.56x = 888,317.16 × 311,400.64
  4. Step 4: Simplify right side
    591,686.56x = 276,622,532,146.98
  5. Step 5: Solve for x
    x = 276,622,532,146.98/591,686.56
  6. Step 6: Final answer
    x = 467,515.32

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1.5x scale

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.