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Finding the Fourth Proportional to 61,916.79, 85,445.65 and 33,622.48

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Solution

The fourth proportional to 61,916.79, 85,445.65 and 33,622.48 is: 46,399.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,916.79 : 85,445.65 = 33,622.48 : x
  2. Step 2: Convert to fraction form
    61,916.79/85,445.65 = 33,622.48/x
  3. Step 3: Cross multiply
    61,916.79x = 85,445.65 × 33,622.48
  4. Step 4: Simplify right side
    61,916.79x = 2,872,894,658.21
  5. Step 5: Solve for x
    x = 2,872,894,658.21/61,916.79
  6. Step 6: Final answer
    x = 46,399.28

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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.