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Finding the Fourth Proportional to 111,686.93, 154,129.16 and 60,699.66

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Solution

The fourth proportional to 111,686.93, 154,129.16 and 60,699.66 is: 83,766.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,686.93 : 154,129.16 = 60,699.66 : x
  2. Step 2: Convert to fraction form
    111,686.93/154,129.16 = 60,699.66/x
  3. Step 3: Cross multiply
    111,686.93x = 154,129.16 × 60,699.66
  4. Step 4: Simplify right side
    111,686.93x = 9,355,588,048.83
  5. Step 5: Solve for x
    x = 9,355,588,048.83/111,686.93
  6. Step 6: Final answer
    x = 83,766.18

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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.