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Finding the Fourth Proportional to 386,642.63, 579,187.89 and 197,095.34

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Solution

The fourth proportional to 386,642.63, 579,187.89 and 197,095.34 is: 295,247.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,642.63 : 579,187.89 = 197,095.34 : x
  2. Step 2: Convert to fraction form
    386,642.63/579,187.89 = 197,095.34/x
  3. Step 3: Cross multiply
    386,642.63x = 579,187.89 × 197,095.34
  4. Step 4: Simplify right side
    386,642.63x = 114,155,231,207.49
  5. Step 5: Solve for x
    x = 114,155,231,207.49/386,642.63
  6. Step 6: Final answer
    x = 295,247.40

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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.