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Finding the Fourth Proportional to 113,659.74, 156,819.68 and 64,600.67

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Solution

The fourth proportional to 113,659.74, 156,819.68 and 64,600.67 is: 89,131.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,659.74 : 156,819.68 = 64,600.67 : x
  2. Step 2: Convert to fraction form
    113,659.74/156,819.68 = 64,600.67/x
  3. Step 3: Cross multiply
    113,659.74x = 156,819.68 × 64,600.67
  4. Step 4: Simplify right side
    113,659.74x = 10,130,656,708.48
  5. Step 5: Solve for x
    x = 10,130,656,708.48/113,659.74
  6. Step 6: Final answer
    x = 89,131.44

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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.