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Finding the Fourth Proportional to 122,073.77, 168,461.78 and 67,629.48

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Solution

The fourth proportional to 122,073.77, 168,461.78 and 67,629.48 is: 93,328.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,073.77 : 168,461.78 = 67,629.48 : x
  2. Step 2: Convert to fraction form
    122,073.77/168,461.78 = 67,629.48/x
  3. Step 3: Cross multiply
    122,073.77x = 168,461.78 × 67,629.48
  4. Step 4: Simplify right side
    122,073.77x = 11,392,982,581.27
  5. Step 5: Solve for x
    x = 11,392,982,581.27/122,073.77
  6. Step 6: Final answer
    x = 93,328.67

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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.