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Finding the Fourth Proportional to 118,718.86, 178,087.54 and 34,480.40

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Solution

The fourth proportional to 118,718.86, 178,087.54 and 34,480.40 is: 51,723.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,718.86 : 178,087.54 = 34,480.40 : x
  2. Step 2: Convert to fraction form
    118,718.86/178,087.54 = 34,480.40/x
  3. Step 3: Cross multiply
    118,718.86x = 178,087.54 × 34,480.40
  4. Step 4: Simplify right side
    118,718.86x = 6,140,529,614.22
  5. Step 5: Solve for x
    x = 6,140,529,614.22/118,718.86
  6. Step 6: Final answer
    x = 51,723.29

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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.