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Finding the Fourth Proportional to 151,948.88, 209,689.46 and 84,880.88

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Solution

The fourth proportional to 151,948.88, 209,689.46 and 84,880.88 is: 117,135.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,948.88 : 209,689.46 = 84,880.88 : x
  2. Step 2: Convert to fraction form
    151,948.88/209,689.46 = 84,880.88/x
  3. Step 3: Cross multiply
    151,948.88x = 209,689.46 × 84,880.88
  4. Step 4: Simplify right side
    151,948.88x = 17,798,624,418.67
  5. Step 5: Solve for x
    x = 17,798,624,418.67/151,948.88
  6. Step 6: Final answer
    x = 117,135.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.