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Finding the Fourth Proportional to 70,692.28, 106,039.78 and 56,586.83

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Solution

The fourth proportional to 70,692.28, 106,039.78 and 56,586.83 is: 84,881.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,692.28 : 106,039.78 = 56,586.83 : x
  2. Step 2: Convert to fraction form
    70,692.28/106,039.78 = 56,586.83/x
  3. Step 3: Cross multiply
    70,692.28x = 106,039.78 × 56,586.83
  4. Step 4: Simplify right side
    70,692.28x = 6,000,454,332.43
  5. Step 5: Solve for x
    x = 6,000,454,332.43/70,692.28
  6. Step 6: Final answer
    x = 84,881.33

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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.