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Finding the Fourth Proportional to 129,596.72, 194,365.92 and 46,490.72

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Solution

The fourth proportional to 129,596.72, 194,365.92 and 46,490.72 is: 69,725.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,596.72 : 194,365.92 = 46,490.72 : x
  2. Step 2: Convert to fraction form
    129,596.72/194,365.92 = 46,490.72/x
  3. Step 3: Cross multiply
    129,596.72x = 194,365.92 × 46,490.72
  4. Step 4: Simplify right side
    129,596.72x = 9,036,211,598.57
  5. Step 5: Solve for x
    x = 9,036,211,598.57/129,596.72
  6. Step 6: Final answer
    x = 69,725.62

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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.