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Finding the Fourth Proportional to 118,763.18, 163,895.84 and 67,774.89

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Solution

The fourth proportional to 118,763.18, 163,895.84 and 67,774.89 is: 93,530.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,763.18 : 163,895.84 = 67,774.89 : x
  2. Step 2: Convert to fraction form
    118,763.18/163,895.84 = 67,774.89/x
  3. Step 3: Cross multiply
    118,763.18x = 163,895.84 × 67,774.89
  4. Step 4: Simplify right side
    118,763.18x = 11,108,022,596.39
  5. Step 5: Solve for x
    x = 11,108,022,596.39/118,763.18
  6. Step 6: Final answer
    x = 93,530.87

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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.