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Finding the Fourth Proportional to 160,692.85, 221,479.41 and 106,881.72

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Solution

The fourth proportional to 160,692.85, 221,479.41 and 106,881.72 is: 147,312.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,692.85 : 221,479.41 = 106,881.72 : x
  2. Step 2: Convert to fraction form
    160,692.85/221,479.41 = 106,881.72/x
  3. Step 3: Cross multiply
    160,692.85x = 221,479.41 × 106,881.72
  4. Step 4: Simplify right side
    160,692.85x = 23,672,100,285.39
  5. Step 5: Solve for x
    x = 23,672,100,285.39/160,692.85
  6. Step 6: Final answer
    x = 147,312.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.