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Finding the Fourth Proportional to 96,718.86, 133,358.40 and 81,584.82

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Solution

The fourth proportional to 96,718.86, 133,358.40 and 81,584.82 is: 112,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,718.86 : 133,358.40 = 81,584.82 : x
  2. Step 2: Convert to fraction form
    96,718.86/133,358.40 = 81,584.82/x
  3. Step 3: Cross multiply
    96,718.86x = 133,358.40 × 81,584.82
  4. Step 4: Simplify right side
    96,718.86x = 10,880,021,059.49
  5. Step 5: Solve for x
    x = 10,880,021,059.49/96,718.86
  6. Step 6: Final answer
    x = 112,491.20

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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.