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Finding the Fourth Proportional to 118,803.25, 178,186.24 and 38,840.66

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Solution

The fourth proportional to 118,803.25, 178,186.24 and 38,840.66 is: 58,254.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,803.25 : 178,186.24 = 38,840.66 : x
  2. Step 2: Convert to fraction form
    118,803.25/178,186.24 = 38,840.66/x
  3. Step 3: Cross multiply
    118,803.25x = 178,186.24 × 38,840.66
  4. Step 4: Simplify right side
    118,803.25x = 6,920,870,176.49
  5. Step 5: Solve for x
    x = 6,920,870,176.49/118,803.25
  6. Step 6: Final answer
    x = 58,254.89

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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.