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Finding the Fourth Proportional to 220,291.90, 329,722.93 and 118,949.07

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Solution

The fourth proportional to 220,291.90, 329,722.93 and 118,949.07 is: 178,037.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,291.90 : 329,722.93 = 118,949.07 : x
  2. Step 2: Convert to fraction form
    220,291.90/329,722.93 = 118,949.07/x
  3. Step 3: Cross multiply
    220,291.90x = 329,722.93 × 118,949.07
  4. Step 4: Simplify right side
    220,291.90x = 39,220,235,881.18
  5. Step 5: Solve for x
    x = 39,220,235,881.18/220,291.90
  6. Step 6: Final answer
    x = 178,037.58

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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.