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Finding the Fourth Proportional to 61,789.59, 85,268.99 and 34,565.32

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Solution

The fourth proportional to 61,789.59, 85,268.99 and 34,565.32 is: 47,699.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,789.59 : 85,268.99 = 34,565.32 : x
  2. Step 2: Convert to fraction form
    61,789.59/85,268.99 = 34,565.32/x
  3. Step 3: Cross multiply
    61,789.59x = 85,268.99 × 34,565.32
  4. Step 4: Simplify right side
    61,789.59x = 2,947,349,925.43
  5. Step 5: Solve for x
    x = 2,947,349,925.43/61,789.59
  6. Step 6: Final answer
    x = 47,699.78

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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.