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Finding the Fourth Proportional to 256,689.48, 354,089.28 and 149,247.64

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Solution

The fourth proportional to 256,689.48, 354,089.28 and 149,247.64 is: 205,879.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,689.48 : 354,089.28 = 149,247.64 : x
  2. Step 2: Convert to fraction form
    256,689.48/354,089.28 = 149,247.64/x
  3. Step 3: Cross multiply
    256,689.48x = 354,089.28 × 149,247.64
  4. Step 4: Simplify right side
    256,689.48x = 52,846,989,389.30
  5. Step 5: Solve for x
    x = 52,846,989,389.30/256,689.48
  6. Step 6: Final answer
    x = 205,879.06

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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.