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Finding the Fourth Proportional to 256,756.52, 354,296.57 and 142,016.92

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Solution

The fourth proportional to 256,756.52, 354,296.57 and 142,016.92 is: 195,968.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,756.52 : 354,296.57 = 142,016.92 : x
  2. Step 2: Convert to fraction form
    256,756.52/354,296.57 = 142,016.92/x
  3. Step 3: Cross multiply
    256,756.52x = 354,296.57 × 142,016.92
  4. Step 4: Simplify right side
    256,756.52x = 50,316,106,042.14
  5. Step 5: Solve for x
    x = 50,316,106,042.14/256,756.52
  6. Step 6: Final answer
    x = 195,968.17

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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.