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Finding the Fourth Proportional to 129,143.66, 193,746.72 and 44,891.66

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Solution

The fourth proportional to 129,143.66, 193,746.72 and 44,891.66 is: 67,348.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,143.66 : 193,746.72 = 44,891.66 : x
  2. Step 2: Convert to fraction form
    129,143.66/193,746.72 = 44,891.66/x
  3. Step 3: Cross multiply
    129,143.66x = 193,746.72 × 44,891.66
  4. Step 4: Simplify right side
    129,143.66x = 8,697,611,880.36
  5. Step 5: Solve for x
    x = 8,697,611,880.36/129,143.66
  6. Step 6: Final answer
    x = 67,348.35

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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.