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Finding the Fourth Proportional to 111,571.93, 153,969.15 and 61,270.93

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Solution

The fourth proportional to 111,571.93, 153,969.15 and 61,270.93 is: 84,553.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,571.93 : 153,969.15 = 61,270.93 : x
  2. Step 2: Convert to fraction form
    111,571.93/153,969.15 = 61,270.93/x
  3. Step 3: Cross multiply
    111,571.93x = 153,969.15 × 61,270.93
  4. Step 4: Simplify right side
    111,571.93x = 9,433,833,011.81
  5. Step 5: Solve for x
    x = 9,433,833,011.81/111,571.93
  6. Step 6: Final answer
    x = 84,553.82

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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.