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Finding the Fourth Proportional to 111,787.77, 167,681.76 and 45,228.46

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Solution

The fourth proportional to 111,787.77, 167,681.76 and 45,228.46 is: 67,842.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,787.77 : 167,681.76 = 45,228.46 : x
  2. Step 2: Convert to fraction form
    111,787.77/167,681.76 = 45,228.46/x
  3. Step 3: Cross multiply
    111,787.77x = 167,681.76 × 45,228.46
  4. Step 4: Simplify right side
    111,787.77x = 7,583,987,774.89
  5. Step 5: Solve for x
    x = 7,583,987,774.89/111,787.77
  6. Step 6: Final answer
    x = 67,842.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.