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Finding the Fourth Proportional to 92,799.17, 128,063.19 and 50,357.70

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Solution

The fourth proportional to 92,799.17, 128,063.19 and 50,357.70 is: 69,493.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,799.17 : 128,063.19 = 50,357.70 : x
  2. Step 2: Convert to fraction form
    92,799.17/128,063.19 = 50,357.70/x
  3. Step 3: Cross multiply
    92,799.17x = 128,063.19 × 50,357.70
  4. Step 4: Simplify right side
    92,799.17x = 6,448,967,703.06
  5. Step 5: Solve for x
    x = 6,448,967,703.06/92,799.17
  6. Step 6: Final answer
    x = 69,493.81

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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.