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Finding the Fourth Proportional to 111,332.97, 153,649.22 and 61,041.69

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Solution

The fourth proportional to 111,332.97, 153,649.22 and 61,041.69 is: 84,242.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,332.97 : 153,649.22 = 61,041.69 : x
  2. Step 2: Convert to fraction form
    111,332.97/153,649.22 = 61,041.69/x
  3. Step 3: Cross multiply
    111,332.97x = 153,649.22 × 61,041.69
  4. Step 4: Simplify right side
    111,332.97x = 9,379,008,055.98
  5. Step 5: Solve for x
    x = 9,379,008,055.98/111,332.97
  6. Step 6: Final answer
    x = 84,242.86

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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.