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Finding the Fourth Proportional to 111,554.89, 153,891.71 and 73,860.73

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Solution

The fourth proportional to 111,554.89, 153,891.71 and 73,860.73 is: 101,892.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,554.89 : 153,891.71 = 73,860.73 : x
  2. Step 2: Convert to fraction form
    111,554.89/153,891.71 = 73,860.73/x
  3. Step 3: Cross multiply
    111,554.89x = 153,891.71 × 73,860.73
  4. Step 4: Simplify right side
    111,554.89x = 11,366,553,672.24
  5. Step 5: Solve for x
    x = 11,366,553,672.24/111,554.89
  6. Step 6: Final answer
    x = 101,892.03

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1.5x scale

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.