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Finding the Fourth Proportional to 389,262.66, 537,191.91 and 217,179.38

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Solution

The fourth proportional to 389,262.66, 537,191.91 and 217,179.38 is: 299,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,262.66 : 537,191.91 = 217,179.38 : x
  2. Step 2: Convert to fraction form
    389,262.66/537,191.91 = 217,179.38/x
  3. Step 3: Cross multiply
    389,262.66x = 537,191.91 × 217,179.38
  4. Step 4: Simplify right side
    389,262.66x = 116,667,003,268.86
  5. Step 5: Solve for x
    x = 116,667,003,268.86/389,262.66
  6. Step 6: Final answer
    x = 299,712.80

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1.5x scale

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.