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Finding the Fourth Proportional to 61,798.48, 85,278.48 and 34,939.28

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Solution

The fourth proportional to 61,798.48, 85,278.48 and 34,939.28 is: 48,214.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,798.48 : 85,278.48 = 34,939.28 : x
  2. Step 2: Convert to fraction form
    61,798.48/85,278.48 = 34,939.28/x
  3. Step 3: Cross multiply
    61,798.48x = 85,278.48 × 34,939.28
  4. Step 4: Simplify right side
    61,798.48x = 2,979,568,690.69
  5. Step 5: Solve for x
    x = 2,979,568,690.69/61,798.48
  6. Step 6: Final answer
    x = 48,214.27

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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.