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Finding the Fourth Proportional to 61,580.79, 84,979.80 and 34,723.08

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Solution

The fourth proportional to 61,580.79, 84,979.80 and 34,723.08 is: 47,916.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,580.79 : 84,979.80 = 34,723.08 : x
  2. Step 2: Convert to fraction form
    61,580.79/84,979.80 = 34,723.08/x
  3. Step 3: Cross multiply
    61,580.79x = 84,979.80 × 34,723.08
  4. Step 4: Simplify right side
    61,580.79x = 2,950,760,393.78
  5. Step 5: Solve for x
    x = 2,950,760,393.78/61,580.79
  6. Step 6: Final answer
    x = 47,916.90

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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.