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Finding the Fourth Proportional to 256,573.56, 354,070.62 and 143,396.31

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Solution

The fourth proportional to 256,573.56, 354,070.62 and 143,396.31 is: 197,886.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,573.56 : 354,070.62 = 143,396.31 : x
  2. Step 2: Convert to fraction form
    256,573.56/354,070.62 = 143,396.31/x
  3. Step 3: Cross multiply
    256,573.56x = 354,070.62 × 143,396.31
  4. Step 4: Simplify right side
    256,573.56x = 50,772,419,238.89
  5. Step 5: Solve for x
    x = 50,772,419,238.89/256,573.56
  6. Step 6: Final answer
    x = 197,886.41

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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.