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Finding the Fourth Proportional to 125,384.94, 173,031.20 and 71,671.11

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Solution

The fourth proportional to 125,384.94, 173,031.20 and 71,671.11 is: 98,906.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,384.94 : 173,031.20 = 71,671.11 : x
  2. Step 2: Convert to fraction form
    125,384.94/173,031.20 = 71,671.11/x
  3. Step 3: Cross multiply
    125,384.94x = 173,031.20 × 71,671.11
  4. Step 4: Simplify right side
    125,384.94x = 12,401,338,168.63
  5. Step 5: Solve for x
    x = 12,401,338,168.63/125,384.94
  6. Step 6: Final answer
    x = 98,906.12

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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.