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Finding the Fourth Proportional to 256,543.70, 354,027.92 and 141,825.31

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Solution

The fourth proportional to 256,543.70, 354,027.92 and 141,825.31 is: 195,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,543.70 : 354,027.92 = 141,825.31 : x
  2. Step 2: Convert to fraction form
    256,543.70/354,027.92 = 141,825.31/x
  3. Step 3: Cross multiply
    256,543.70x = 354,027.92 × 141,825.31
  4. Step 4: Simplify right side
    256,543.70x = 50,210,117,908.46
  5. Step 5: Solve for x
    x = 50,210,117,908.46/256,543.70
  6. Step 6: Final answer
    x = 195,717.60

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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.