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Finding the Fourth Proportional to 256,660.79, 354,192.71 and 143,483.54

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Solution

The fourth proportional to 256,660.79, 354,192.71 and 143,483.54 is: 198,007.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,660.79 : 354,192.71 = 143,483.54 : x
  2. Step 2: Convert to fraction form
    256,660.79/354,192.71 = 143,483.54/x
  3. Step 3: Cross multiply
    256,660.79x = 354,192.71 × 143,483.54
  4. Step 4: Simplify right side
    256,660.79x = 50,820,821,384.61
  5. Step 5: Solve for x
    x = 50,820,821,384.61/256,660.79
  6. Step 6: Final answer
    x = 198,007.74

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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.