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Finding the Fourth Proportional to 389,508.75, 584,263.13 and 94,020.75

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Solution

The fourth proportional to 389,508.75, 584,263.13 and 94,020.75 is: 141,031.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,508.75 : 584,263.13 = 94,020.75 : x
  2. Step 2: Convert to fraction form
    389,508.75/584,263.13 = 94,020.75/x
  3. Step 3: Cross multiply
    389,508.75x = 584,263.13 × 94,020.75
  4. Step 4: Simplify right side
    389,508.75x = 54,932,857,209.84
  5. Step 5: Solve for x
    x = 54,932,857,209.84/389,508.75
  6. Step 6: Final answer
    x = 141,031.13

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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.