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Finding the Fourth Proportional to 118,802.98, 177,711.99 and 90,508.96

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Solution

The fourth proportional to 118,802.98, 177,711.99 and 90,508.96 is: 135,388.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,802.98 : 177,711.99 = 90,508.96 : x
  2. Step 2: Convert to fraction form
    118,802.98/177,711.99 = 90,508.96/x
  3. Step 3: Cross multiply
    118,802.98x = 177,711.99 × 90,508.96
  4. Step 4: Simplify right side
    118,802.98x = 16,084,527,394.43
  5. Step 5: Solve for x
    x = 16,084,527,394.43/118,802.98
  6. Step 6: Final answer
    x = 135,388.25

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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.