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Finding the Fourth Proportional to 111,584.94, 153,987.08 and 61,283.94

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Solution

The fourth proportional to 111,584.94, 153,987.08 and 61,283.94 is: 84,571.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,584.94 : 153,987.08 = 61,283.94 : x
  2. Step 2: Convert to fraction form
    111,584.94/153,987.08 = 61,283.94/x
  3. Step 3: Cross multiply
    111,584.94x = 153,987.08 × 61,283.94
  4. Step 4: Simplify right side
    111,584.94x = 9,436,934,971.50
  5. Step 5: Solve for x
    x = 9,436,934,971.50/111,584.94
  6. Step 6: Final answer
    x = 84,571.76

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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.