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Finding the Fourth Proportional to 528,057.73, 792,111.20 and 154,080.73

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Solution

The fourth proportional to 528,057.73, 792,111.20 and 154,080.73 is: 231,128.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,057.73 : 792,111.20 = 154,080.73 : x
  2. Step 2: Convert to fraction form
    528,057.73/792,111.20 = 154,080.73/x
  3. Step 3: Cross multiply
    528,057.73x = 792,111.20 × 154,080.73
  4. Step 4: Simplify right side
    528,057.73x = 122,049,071,937.18
  5. Step 5: Solve for x
    x = 122,049,071,937.18/528,057.73
  6. Step 6: Final answer
    x = 231,128.27

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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.