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Finding the Fourth Proportional to 256,837.62, 354,416.67 and 143,638.50

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Solution

The fourth proportional to 256,837.62, 354,416.67 and 143,638.50 is: 198,210.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,837.62 : 354,416.67 = 143,638.50 : x
  2. Step 2: Convert to fraction form
    256,837.62/354,416.67 = 143,638.50/x
  3. Step 3: Cross multiply
    256,837.62x = 354,416.67 × 143,638.50
  4. Step 4: Simplify right side
    256,837.62x = 50,907,878,853.80
  5. Step 5: Solve for x
    x = 50,907,878,853.80/256,837.62
  6. Step 6: Final answer
    x = 198,210.37

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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.