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Finding the Fourth Proportional to 256,560.60, 354,054.15 and 143,383.35

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Solution

The fourth proportional to 256,560.60, 354,054.15 and 143,383.35 is: 197,869.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,560.60 : 354,054.15 = 143,383.35 : x
  2. Step 2: Convert to fraction form
    256,560.60/354,054.15 = 143,383.35/x
  3. Step 3: Cross multiply
    256,560.60x = 354,054.15 × 143,383.35
  4. Step 4: Simplify right side
    256,560.60x = 50,765,470,108.40
  5. Step 5: Solve for x
    x = 50,765,470,108.40/256,560.60
  6. Step 6: Final answer
    x = 197,869.31

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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.