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Finding the Fourth Proportional to 191,998.90, 265,058.09 and 140,257.90

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Solution

The fourth proportional to 191,998.90, 265,058.09 and 140,257.90 is: 193,628.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,998.90 : 265,058.09 = 140,257.90 : x
  2. Step 2: Convert to fraction form
    191,998.90/265,058.09 = 140,257.90/x
  3. Step 3: Cross multiply
    191,998.90x = 265,058.09 × 140,257.90
  4. Step 4: Simplify right side
    191,998.90x = 37,176,491,081.41
  5. Step 5: Solve for x
    x = 37,176,491,081.41/191,998.90
  6. Step 6: Final answer
    x = 193,628.67

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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.