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Finding the Fourth Proportional to 57,695.33, 86,391.90 and 46,390.58

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Solution

The fourth proportional to 57,695.33, 86,391.90 and 46,390.58 is: 69,464.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,695.33 : 86,391.90 = 46,390.58 : x
  2. Step 2: Convert to fraction form
    57,695.33/86,391.90 = 46,390.58/x
  3. Step 3: Cross multiply
    57,695.33x = 86,391.90 × 46,390.58
  4. Step 4: Simplify right side
    57,695.33x = 4,007,769,916.34
  5. Step 5: Solve for x
    x = 4,007,769,916.34/57,695.33
  6. Step 6: Final answer
    x = 69,464.38

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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.