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Finding the Fourth Proportional to 111,584.64, 153,990.24 and 61,283.52

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Solution

The fourth proportional to 111,584.64, 153,990.24 and 61,283.52 is: 84,573.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,584.64 : 153,990.24 = 61,283.52 : x
  2. Step 2: Convert to fraction form
    111,584.64/153,990.24 = 61,283.52/x
  3. Step 3: Cross multiply
    111,584.64x = 153,990.24 × 61,283.52
  4. Step 4: Simplify right side
    111,584.64x = 9,437,063,952.84
  5. Step 5: Solve for x
    x = 9,437,063,952.84/111,584.64
  6. Step 6: Final answer
    x = 84,573.15

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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.