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Finding the Fourth Proportional to 118,050.84, 177,124.77 and 86,621.22

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Solution

The fourth proportional to 118,050.84, 177,124.77 and 86,621.22 is: 129,967.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,050.84 : 177,124.77 = 86,621.22 : x
  2. Step 2: Convert to fraction form
    118,050.84/177,124.77 = 86,621.22/x
  3. Step 3: Cross multiply
    118,050.84x = 177,124.77 × 86,621.22
  4. Step 4: Simplify right side
    118,050.84x = 15,342,763,669.62
  5. Step 5: Solve for x
    x = 15,342,763,669.62/118,050.84
  6. Step 6: Final answer
    x = 129,967.42

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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.