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Finding the Fourth Proportional to 93,316.70, 140,040.66 and 84,393.74

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Solution

The fourth proportional to 93,316.70, 140,040.66 and 84,393.74 is: 126,649.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,316.70 : 140,040.66 = 84,393.74 : x
  2. Step 2: Convert to fraction form
    93,316.70/140,040.66 = 84,393.74/x
  3. Step 3: Cross multiply
    93,316.70x = 140,040.66 × 84,393.74
  4. Step 4: Simplify right side
    93,316.70x = 11,818,555,049.47
  5. Step 5: Solve for x
    x = 11,818,555,049.47/93,316.70
  6. Step 6: Final answer
    x = 126,649.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.