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Finding the Fourth Proportional to 392,707.52, 589,080.72 and 112,266.08

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Solution

The fourth proportional to 392,707.52, 589,080.72 and 112,266.08 is: 168,404.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,707.52 : 589,080.72 = 112,266.08 : x
  2. Step 2: Convert to fraction form
    392,707.52/589,080.72 = 112,266.08/x
  3. Step 3: Cross multiply
    392,707.52x = 589,080.72 × 112,266.08
  4. Step 4: Simplify right side
    392,707.52x = 66,133,783,237.98
  5. Step 5: Solve for x
    x = 66,133,783,237.98/392,707.52
  6. Step 6: Final answer
    x = 168,404.68

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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.