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Finding the Fourth Proportional to 118,088.91, 162,950.88 and 66,400.52

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Solution

The fourth proportional to 118,088.91, 162,950.88 and 66,400.52 is: 91,626.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,088.91 : 162,950.88 = 66,400.52 : x
  2. Step 2: Convert to fraction form
    118,088.91/162,950.88 = 66,400.52/x
  3. Step 3: Cross multiply
    118,088.91x = 162,950.88 × 66,400.52
  4. Step 4: Simplify right side
    118,088.91x = 10,820,022,351.70
  5. Step 5: Solve for x
    x = 10,820,022,351.70/118,088.91
  6. Step 6: Final answer
    x = 91,626.07

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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.