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Finding the Fourth Proportional to 256,025.91, 353,448.64 and 187,037.96

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Solution

The fourth proportional to 256,025.91, 353,448.64 and 187,037.96 is: 258,209.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,025.91 : 353,448.64 = 187,037.96 : x
  2. Step 2: Convert to fraction form
    256,025.91/353,448.64 = 187,037.96/x
  3. Step 3: Cross multiply
    256,025.91x = 353,448.64 × 187,037.96
  4. Step 4: Simplify right side
    256,025.91x = 66,108,312,519.03
  5. Step 5: Solve for x
    x = 66,108,312,519.03/256,025.91
  6. Step 6: Final answer
    x = 258,209.46

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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.