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Finding the Fourth Proportional to 65,979.91, 90,930.17 and 46,860.52

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Solution

The fourth proportional to 65,979.91, 90,930.17 and 46,860.52 is: 64,580.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,979.91 : 90,930.17 = 46,860.52 : x
  2. Step 2: Convert to fraction form
    65,979.91/90,930.17 = 46,860.52/x
  3. Step 3: Cross multiply
    65,979.91x = 90,930.17 × 46,860.52
  4. Step 4: Simplify right side
    65,979.91x = 4,261,034,588.26
  5. Step 5: Solve for x
    x = 4,261,034,588.26/65,979.91
  6. Step 6: Final answer
    x = 64,580.79

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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.