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Finding the Fourth Proportional to 91,148.58, 125,780.76 and 67,266.54

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Solution

The fourth proportional to 91,148.58, 125,780.76 and 67,266.54 is: 92,824.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,148.58 : 125,780.76 = 67,266.54 : x
  2. Step 2: Convert to fraction form
    91,148.58/125,780.76 = 67,266.54/x
  3. Step 3: Cross multiply
    91,148.58x = 125,780.76 × 67,266.54
  4. Step 4: Simplify right side
    91,148.58x = 8,460,836,523.77
  5. Step 5: Solve for x
    x = 8,460,836,523.77/91,148.58
  6. Step 6: Final answer
    x = 92,824.67

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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.