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Finding the Fourth Proportional to 118,674.77, 178,017.62 and 66,044.61

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Solution

The fourth proportional to 118,674.77, 178,017.62 and 66,044.61 is: 99,069.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,674.77 : 178,017.62 = 66,044.61 : x
  2. Step 2: Convert to fraction form
    118,674.77/178,017.62 = 66,044.61/x
  3. Step 3: Cross multiply
    118,674.77x = 178,017.62 × 66,044.61
  4. Step 4: Simplify right side
    118,674.77x = 11,757,103,955.81
  5. Step 5: Solve for x
    x = 11,757,103,955.81/118,674.77
  6. Step 6: Final answer
    x = 99,069.96

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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.