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Finding the Fourth Proportional to 93,690.64, 129,295.74 and 51,251.86

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Solution

The fourth proportional to 93,690.64, 129,295.74 and 51,251.86 is: 70,729.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,690.64 : 129,295.74 = 51,251.86 : x
  2. Step 2: Convert to fraction form
    93,690.64/129,295.74 = 51,251.86/x
  3. Step 3: Cross multiply
    93,690.64x = 129,295.74 × 51,251.86
  4. Step 4: Simplify right side
    93,690.64x = 6,626,647,165.08
  5. Step 5: Solve for x
    x = 6,626,647,165.08/93,690.64
  6. Step 6: Final answer
    x = 70,729.02

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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.