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Finding the Fourth Proportional to 392,703.52, 589,074.72 and 112,262.08

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Solution

The fourth proportional to 392,703.52, 589,074.72 and 112,262.08 is: 168,398.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,703.52 : 589,074.72 = 112,262.08 : x
  2. Step 2: Convert to fraction form
    392,703.52/589,074.72 = 112,262.08/x
  3. Step 3: Cross multiply
    392,703.52x = 589,074.72 × 112,262.08
  4. Step 4: Simplify right side
    392,703.52x = 66,130,753,342.62
  5. Step 5: Solve for x
    x = 66,130,753,342.62/392,703.52
  6. Step 6: Final answer
    x = 168,398.68

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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.