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Finding the Fourth Proportional to 107,311.27, 160,969.95 and 28,425.51

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Solution

The fourth proportional to 107,311.27, 160,969.95 and 28,425.51 is: 42,639.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,311.27 : 160,969.95 = 28,425.51 : x
  2. Step 2: Convert to fraction form
    107,311.27/160,969.95 = 28,425.51/x
  3. Step 3: Cross multiply
    107,311.27x = 160,969.95 × 28,425.51
  4. Step 4: Simplify right side
    107,311.27x = 4,575,652,923.42
  5. Step 5: Solve for x
    x = 4,575,652,923.42/107,311.27
  6. Step 6: Final answer
    x = 42,639.07

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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.