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Finding the Fourth Proportional to 66,694.62, 99,930.87 and 46,931.66

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Solution

The fourth proportional to 66,694.62, 99,930.87 and 46,931.66 is: 70,319.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,694.62 : 99,930.87 = 46,931.66 : x
  2. Step 2: Convert to fraction form
    66,694.62/99,930.87 = 46,931.66/x
  3. Step 3: Cross multiply
    66,694.62x = 99,930.87 × 46,931.66
  4. Step 4: Simplify right side
    66,694.62x = 4,689,921,614.34
  5. Step 5: Solve for x
    x = 4,689,921,614.34/66,694.62
  6. Step 6: Final answer
    x = 70,319.34

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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.