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Finding the Fourth Proportional to 76,751.91, 105,889.55 and 46,515.42

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Solution

The fourth proportional to 76,751.91, 105,889.55 and 46,515.42 is: 64,174.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,751.91 : 105,889.55 = 46,515.42 : x
  2. Step 2: Convert to fraction form
    76,751.91/105,889.55 = 46,515.42/x
  3. Step 3: Cross multiply
    76,751.91x = 105,889.55 × 46,515.42
  4. Step 4: Simplify right side
    76,751.91x = 4,925,496,659.28
  5. Step 5: Solve for x
    x = 4,925,496,659.28/76,751.91
  6. Step 6: Final answer
    x = 64,174.26

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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.