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Finding the Fourth Proportional to 256,000.36, 353,280.72 and 142,823.14

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Solution

The fourth proportional to 256,000.36, 353,280.72 and 142,823.14 is: 197,096.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,000.36 : 353,280.72 = 142,823.14 : x
  2. Step 2: Convert to fraction form
    256,000.36/353,280.72 = 142,823.14/x
  3. Step 3: Cross multiply
    256,000.36x = 353,280.72 × 142,823.14
  4. Step 4: Simplify right side
    256,000.36x = 50,456,661,731.86
  5. Step 5: Solve for x
    x = 50,456,661,731.86/256,000.36
  6. Step 6: Final answer
    x = 197,096.06

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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.