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Finding the Fourth Proportional to 256,557.59, 354,050.01 and 143,380.34

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Solution

The fourth proportional to 256,557.59, 354,050.01 and 143,380.34 is: 197,865.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,557.59 : 354,050.01 = 143,380.34 : x
  2. Step 2: Convert to fraction form
    256,557.59/354,050.01 = 143,380.34/x
  3. Step 3: Cross multiply
    256,557.59x = 354,050.01 × 143,380.34
  4. Step 4: Simplify right side
    256,557.59x = 50,763,809,040.55
  5. Step 5: Solve for x
    x = 50,763,809,040.55/256,557.59
  6. Step 6: Final answer
    x = 197,865.17

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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.