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Finding the Fourth Proportional to 185,117.80, 277,676.70 and 91,805.80

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Solution

The fourth proportional to 185,117.80, 277,676.70 and 91,805.80 is: 137,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,117.80 : 277,676.70 = 91,805.80 : x
  2. Step 2: Convert to fraction form
    185,117.80/277,676.70 = 91,805.80/x
  3. Step 3: Cross multiply
    185,117.80x = 277,676.70 × 91,805.80
  4. Step 4: Simplify right side
    185,117.80x = 25,492,331,584.86
  5. Step 5: Solve for x
    x = 25,492,331,584.86/185,117.80
  6. Step 6: Final answer
    x = 137,708.70

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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.