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Finding the Fourth Proportional to 262,005.87, 392,679.95 and 112,069.92

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Solution

The fourth proportional to 262,005.87, 392,679.95 and 112,069.92 is: 167,964.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,005.87 : 392,679.95 = 112,069.92 : x
  2. Step 2: Convert to fraction form
    262,005.87/392,679.95 = 112,069.92/x
  3. Step 3: Cross multiply
    262,005.87x = 392,679.95 × 112,069.92
  4. Step 4: Simplify right side
    262,005.87x = 44,007,610,021.75
  5. Step 5: Solve for x
    x = 44,007,610,021.75/262,005.87
  6. Step 6: Final answer
    x = 167,964.21

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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.