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Finding the Fourth Proportional to 92,919.40, 128,228.93 and 50,477.97

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Solution

The fourth proportional to 92,919.40, 128,228.93 and 50,477.97 is: 69,659.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,919.40 : 128,228.93 = 50,477.97 : x
  2. Step 2: Convert to fraction form
    92,919.40/128,228.93 = 50,477.97/x
  3. Step 3: Cross multiply
    92,919.40x = 128,228.93 × 50,477.97
  4. Step 4: Simplify right side
    92,919.40x = 6,472,735,188.14
  5. Step 5: Solve for x
    x = 6,472,735,188.14/92,919.40
  6. Step 6: Final answer
    x = 69,659.67

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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.