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Finding the Fourth Proportional to 386,083.84, 579,141.96 and 105,600.64

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Solution

The fourth proportional to 386,083.84, 579,141.96 and 105,600.64 is: 158,405.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,083.84 : 579,141.96 = 105,600.64 : x
  2. Step 2: Convert to fraction form
    386,083.84/579,141.96 = 105,600.64/x
  3. Step 3: Cross multiply
    386,083.84x = 579,141.96 × 105,600.64
  4. Step 4: Simplify right side
    386,083.84x = 61,157,761,626.85
  5. Step 5: Solve for x
    x = 61,157,761,626.85/386,083.84
  6. Step 6: Final answer
    x = 158,405.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.