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Finding the Fourth Proportional to 386,646.39, 579,193.50 and 197,099.10

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Solution

The fourth proportional to 386,646.39, 579,193.50 and 197,099.10 is: 295,253.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,646.39 : 579,193.50 = 197,099.10 : x
  2. Step 2: Convert to fraction form
    386,646.39/579,193.50 = 197,099.10/x
  3. Step 3: Cross multiply
    386,646.39x = 579,193.50 × 197,099.10
  4. Step 4: Simplify right side
    386,646.39x = 114,158,517,575.85
  5. Step 5: Solve for x
    x = 114,158,517,575.85/386,646.39
  6. Step 6: Final answer
    x = 295,253.03

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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.