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Finding the Fourth Proportional to 570,186.78, 855,593.37 and 289,728.06

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Solution

The fourth proportional to 570,186.78, 855,593.37 and 289,728.06 is: 434,751.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,186.78 : 855,593.37 = 289,728.06 : x
  2. Step 2: Convert to fraction form
    570,186.78/855,593.37 = 289,728.06/x
  3. Step 3: Cross multiply
    570,186.78x = 855,593.37 × 289,728.06
  4. Step 4: Simplify right side
    570,186.78x = 247,889,407,238.96
  5. Step 5: Solve for x
    x = 247,889,407,238.96/570,186.78
  6. Step 6: Final answer
    x = 434,751.24

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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.