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Finding the Fourth Proportional to 528,091.20, 792,136.80 and 195,796.80

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Solution

The fourth proportional to 528,091.20, 792,136.80 and 195,796.80 is: 293,695.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,091.20 : 792,136.80 = 195,796.80 : x
  2. Step 2: Convert to fraction form
    528,091.20/792,136.80 = 195,796.80/x
  3. Step 3: Cross multiply
    528,091.20x = 792,136.80 × 195,796.80
  4. Step 4: Simplify right side
    528,091.20x = 155,097,850,602.24
  5. Step 5: Solve for x
    x = 155,097,850,602.24/528,091.20
  6. Step 6: Final answer
    x = 293,695.20

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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.