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Finding the Fourth Proportional to 256,528.61, 354,006.87 and 143,351.36

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Solution

The fourth proportional to 256,528.61, 354,006.87 and 143,351.36 is: 197,823.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,528.61 : 354,006.87 = 143,351.36 : x
  2. Step 2: Convert to fraction form
    256,528.61/354,006.87 = 143,351.36/x
  3. Step 3: Cross multiply
    256,528.61x = 354,006.87 × 143,351.36
  4. Step 4: Simplify right side
    256,528.61x = 50,747,366,263.84
  5. Step 5: Solve for x
    x = 50,747,366,263.84/256,528.61
  6. Step 6: Final answer
    x = 197,823.42

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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.