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Finding the Fourth Proportional to 256,445.75, 353,876.60 and 141,723.02

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Solution

The fourth proportional to 256,445.75, 353,876.60 and 141,723.02 is: 195,567.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,445.75 : 353,876.60 = 141,723.02 : x
  2. Step 2: Convert to fraction form
    256,445.75/353,876.60 = 141,723.02/x
  3. Step 3: Cross multiply
    256,445.75x = 353,876.60 × 141,723.02
  4. Step 4: Simplify right side
    256,445.75x = 50,152,460,459.33
  5. Step 5: Solve for x
    x = 50,152,460,459.33/256,445.75
  6. Step 6: Final answer
    x = 195,567.52

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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.