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Finding the Fourth Proportional to 127,201.70, 190,911.90 and 56,233.55

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Solution

The fourth proportional to 127,201.70, 190,911.90 and 56,233.55 is: 84,398.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,201.70 : 190,911.90 = 56,233.55 : x
  2. Step 2: Convert to fraction form
    127,201.70/190,911.90 = 56,233.55/x
  3. Step 3: Cross multiply
    127,201.70x = 190,911.90 × 56,233.55
  4. Step 4: Simplify right side
    127,201.70x = 10,735,653,874.25
  5. Step 5: Solve for x
    x = 10,735,653,874.25/127,201.70
  6. Step 6: Final answer
    x = 84,398.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.