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Finding the Fourth Proportional to 51,109.93, 70,531.70 and 28,448.44

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Solution

The fourth proportional to 51,109.93, 70,531.70 and 28,448.44 is: 39,258.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,109.93 : 70,531.70 = 28,448.44 : x
  2. Step 2: Convert to fraction form
    51,109.93/70,531.70 = 28,448.44/x
  3. Step 3: Cross multiply
    51,109.93x = 70,531.70 × 28,448.44
  4. Step 4: Simplify right side
    51,109.93x = 2,006,516,835.55
  5. Step 5: Solve for x
    x = 2,006,516,835.55/51,109.93
  6. Step 6: Final answer
    x = 39,258.85

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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.