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Finding the Fourth Proportional to 61,917.48, 85,447.80 and 36,425.52

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Solution

The fourth proportional to 61,917.48, 85,447.80 and 36,425.52 is: 50,268.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,917.48 : 85,447.80 = 36,425.52 : x
  2. Step 2: Convert to fraction form
    61,917.48/85,447.80 = 36,425.52/x
  3. Step 3: Cross multiply
    61,917.48x = 85,447.80 × 36,425.52
  4. Step 4: Simplify right side
    61,917.48x = 3,112,480,547.86
  5. Step 5: Solve for x
    x = 3,112,480,547.86/61,917.48
  6. Step 6: Final answer
    x = 50,268.20

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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.