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Finding the Fourth Proportional to 256,510.08, 353,977.12 and 143,333.76

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Solution

The fourth proportional to 256,510.08, 353,977.12 and 143,333.76 is: 197,796.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,510.08 : 353,977.12 = 143,333.76 : x
  2. Step 2: Convert to fraction form
    256,510.08/353,977.12 = 143,333.76/x
  3. Step 3: Cross multiply
    256,510.08x = 353,977.12 × 143,333.76
  4. Step 4: Simplify right side
    256,510.08x = 50,736,871,563.57
  5. Step 5: Solve for x
    x = 50,736,871,563.57/256,510.08
  6. Step 6: Final answer
    x = 197,796.79

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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.