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Finding the Fourth Proportional to 111,686.65, 154,127.00 and 60,698.57

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Solution

The fourth proportional to 111,686.65, 154,127.00 and 60,698.57 is: 83,763.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,686.65 : 154,127.00 = 60,698.57 : x
  2. Step 2: Convert to fraction form
    111,686.65/154,127.00 = 60,698.57/x
  3. Step 3: Cross multiply
    111,686.65x = 154,127.00 × 60,698.57
  4. Step 4: Simplify right side
    111,686.65x = 9,355,287,879.50
  5. Step 5: Solve for x
    x = 9,355,287,879.50/111,686.65
  6. Step 6: Final answer
    x = 83,763.71

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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.