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Finding the Fourth Proportional to 160,707.70, 221,778.63 and 92,738.78

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Solution

The fourth proportional to 160,707.70, 221,778.63 and 92,738.78 is: 127,980.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,707.70 : 221,778.63 = 92,738.78 : x
  2. Step 2: Convert to fraction form
    160,707.70/221,778.63 = 92,738.78/x
  3. Step 3: Cross multiply
    160,707.70x = 221,778.63 × 92,738.78
  4. Step 4: Simplify right side
    160,707.70x = 20,567,478,003.68
  5. Step 5: Solve for x
    x = 20,567,478,003.68/160,707.70
  6. Step 6: Final answer
    x = 127,980.67

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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.