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Finding the Fourth Proportional to 113,660.74, 156,821.06 and 64,601.67

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Solution

The fourth proportional to 113,660.74, 156,821.06 and 64,601.67 is: 89,132.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,660.74 : 156,821.06 = 64,601.67 : x
  2. Step 2: Convert to fraction form
    113,660.74/156,821.06 = 64,601.67/x
  3. Step 3: Cross multiply
    113,660.74x = 156,821.06 × 64,601.67
  4. Step 4: Simplify right side
    113,660.74x = 10,130,902,367.17
  5. Step 5: Solve for x
    x = 10,130,902,367.17/113,660.74
  6. Step 6: Final answer
    x = 89,132.82

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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.