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Finding the Fourth Proportional to 256,760.60, 354,330.30 and 143,583.34

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Solution

The fourth proportional to 256,760.60, 354,330.30 and 143,583.34 is: 198,145.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,760.60 : 354,330.30 = 143,583.34 : x
  2. Step 2: Convert to fraction form
    256,760.60/354,330.30 = 143,583.34/x
  3. Step 3: Cross multiply
    256,760.60x = 354,330.30 × 143,583.34
  4. Step 4: Simplify right side
    256,760.60x = 50,875,927,937.20
  5. Step 5: Solve for x
    x = 50,875,927,937.20/256,760.60
  6. Step 6: Final answer
    x = 198,145.38

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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.