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Finding the Fourth Proportional to 66,688.62, 99,921.87 and 46,925.66

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Solution

The fourth proportional to 66,688.62, 99,921.87 and 46,925.66 is: 70,310.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,688.62 : 99,921.87 = 46,925.66 : x
  2. Step 2: Convert to fraction form
    66,688.62/99,921.87 = 46,925.66/x
  3. Step 3: Cross multiply
    66,688.62x = 99,921.87 × 46,925.66
  4. Step 4: Simplify right side
    66,688.62x = 4,688,899,198.57
  5. Step 5: Solve for x
    x = 4,688,899,198.57/66,688.62
  6. Step 6: Final answer
    x = 70,310.33

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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.