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Finding the Fourth Proportional to 118,515, 177,778.98 and 35,415.48

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Solution

The fourth proportional to 118,515, 177,778.98 and 35,415.48 is: 53,125.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,515 : 177,778.98 = 35,415.48 : x
  2. Step 2: Convert to fraction form
    118,515/177,778.98 = 35,415.48/x
  3. Step 3: Cross multiply
    118,515x = 177,778.98 × 35,415.48
  4. Step 4: Simplify right side
    118,515x = 6,296,127,910.61
  5. Step 5: Solve for x
    x = 6,296,127,910.61/118,515
  6. Step 6: Final answer
    x = 53,125.16

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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.