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Finding the Fourth Proportional to 471,018.75, 649,987.34 and 256,158.75

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Solution

The fourth proportional to 471,018.75, 649,987.34 and 256,158.75 is: 353,489.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,018.75 : 649,987.34 = 256,158.75 : x
  2. Step 2: Convert to fraction form
    471,018.75/649,987.34 = 256,158.75/x
  3. Step 3: Cross multiply
    471,018.75x = 649,987.34 × 256,158.75
  4. Step 4: Simplify right side
    471,018.75x = 166,499,945,686.88
  5. Step 5: Solve for x
    x = 166,499,945,686.88/471,018.75
  6. Step 6: Final answer
    x = 353,489.00

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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.