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Finding the Fourth Proportional to 321,710.38, 482,598.36 and 111,347.70

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Solution

The fourth proportional to 321,710.38, 482,598.36 and 111,347.70 is: 167,032.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,710.38 : 482,598.36 = 111,347.70 : x
  2. Step 2: Convert to fraction form
    321,710.38/482,598.36 = 111,347.70/x
  3. Step 3: Cross multiply
    321,710.38x = 482,598.36 × 111,347.70
  4. Step 4: Simplify right side
    321,710.38x = 53,736,217,409.77
  5. Step 5: Solve for x
    x = 53,736,217,409.77/321,710.38
  6. Step 6: Final answer
    x = 167,032.90

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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.