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Finding the Fourth Proportional to 256,668.51, 354,204.75 and 143,491.26

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Solution

The fourth proportional to 256,668.51, 354,204.75 and 143,491.26 is: 198,019.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,668.51 : 354,204.75 = 143,491.26 : x
  2. Step 2: Convert to fraction form
    256,668.51/354,204.75 = 143,491.26/x
  3. Step 3: Cross multiply
    256,668.51x = 354,204.75 × 143,491.26
  4. Step 4: Simplify right side
    256,668.51x = 50,825,285,875.49
  5. Step 5: Solve for x
    x = 50,825,285,875.49/256,668.51
  6. Step 6: Final answer
    x = 198,019.17

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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.