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Finding the Fourth Proportional to 111,120.98, 153,346.95 and 60,133.71

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Solution

The fourth proportional to 111,120.98, 153,346.95 and 60,133.71 is: 82,984.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,120.98 : 153,346.95 = 60,133.71 : x
  2. Step 2: Convert to fraction form
    111,120.98/153,346.95 = 60,133.71/x
  3. Step 3: Cross multiply
    111,120.98x = 153,346.95 × 60,133.71
  4. Step 4: Simplify right side
    111,120.98x = 9,221,320,220.13
  5. Step 5: Solve for x
    x = 9,221,320,220.13/111,120.98
  6. Step 6: Final answer
    x = 82,984.51

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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.