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Finding the Fourth Proportional to 84,866.86, 117,121.98 and 49,065.94

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Solution

The fourth proportional to 84,866.86, 117,121.98 and 49,065.94 is: 67,714.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,866.86 : 117,121.98 = 49,065.94 : x
  2. Step 2: Convert to fraction form
    84,866.86/117,121.98 = 49,065.94/x
  3. Step 3: Cross multiply
    84,866.86x = 117,121.98 × 49,065.94
  4. Step 4: Simplify right side
    84,866.86x = 5,746,700,043.36
  5. Step 5: Solve for x
    x = 5,746,700,043.36/84,866.86
  6. Step 6: Final answer
    x = 67,714.30

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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.