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Finding the Fourth Proportional to 118,737.65, 178,051.11 and 68,832.02

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Solution

The fourth proportional to 118,737.65, 178,051.11 and 68,832.02 is: 103,215.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,737.65 : 178,051.11 = 68,832.02 : x
  2. Step 2: Convert to fraction form
    118,737.65/178,051.11 = 68,832.02/x
  3. Step 3: Cross multiply
    118,737.65x = 178,051.11 × 68,832.02
  4. Step 4: Simplify right side
    118,737.65x = 12,255,617,564.54
  5. Step 5: Solve for x
    x = 12,255,617,564.54/118,737.65
  6. Step 6: Final answer
    x = 103,215.94

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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.