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Finding the Fourth Proportional to 256,445.77, 353,884.27 and 141,728.71

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Solution

The fourth proportional to 256,445.77, 353,884.27 and 141,728.71 is: 195,579.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,445.77 : 353,884.27 = 141,728.71 : x
  2. Step 2: Convert to fraction form
    256,445.77/353,884.27 = 141,728.71/x
  3. Step 3: Cross multiply
    256,445.77x = 353,884.27 × 141,728.71
  4. Step 4: Simplify right side
    256,445.77x = 50,155,561,076.39
  5. Step 5: Solve for x
    x = 50,155,561,076.39/256,445.77
  6. Step 6: Final answer
    x = 195,579.60

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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.