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Finding the Fourth Proportional to 117,870.77, 162,648.34 and 69,469.55

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Solution

The fourth proportional to 117,870.77, 162,648.34 and 69,469.55 is: 95,860.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,870.77 : 162,648.34 = 69,469.55 : x
  2. Step 2: Convert to fraction form
    117,870.77/162,648.34 = 69,469.55/x
  3. Step 3: Cross multiply
    117,870.77x = 162,648.34 × 69,469.55
  4. Step 4: Simplify right side
    117,870.77x = 11,299,106,988.05
  5. Step 5: Solve for x
    x = 11,299,106,988.05/117,870.77
  6. Step 6: Final answer
    x = 95,860.13

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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.