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Finding the Fourth Proportional to 257,487.93, 355,457.70 and 171,589.86

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Solution

The fourth proportional to 257,487.93, 355,457.70 and 171,589.86 is: 236,876.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,487.93 : 355,457.70 = 171,589.86 : x
  2. Step 2: Convert to fraction form
    257,487.93/355,457.70 = 171,589.86/x
  3. Step 3: Cross multiply
    257,487.93x = 355,457.70 × 171,589.86
  4. Step 4: Simplify right side
    257,487.93x = 60,992,936,978.92
  5. Step 5: Solve for x
    x = 60,992,936,978.92/257,487.93
  6. Step 6: Final answer
    x = 236,876.88

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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.