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Finding the Fourth Proportional to 220,482.54, 330,915.78 and 125,902.08

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Solution

The fourth proportional to 220,482.54, 330,915.78 and 125,902.08 is: 188,962.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,482.54 : 330,915.78 = 125,902.08 : x
  2. Step 2: Convert to fraction form
    220,482.54/330,915.78 = 125,902.08/x
  3. Step 3: Cross multiply
    220,482.54x = 330,915.78 × 125,902.08
  4. Step 4: Simplify right side
    220,482.54x = 41,662,985,006.82
  5. Step 5: Solve for x
    x = 41,662,985,006.82/220,482.54
  6. Step 6: Final answer
    x = 188,962.74

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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.