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Finding the Fourth Proportional to 61,955.60, 85,498.71 and 33,661.40

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Solution

The fourth proportional to 61,955.60, 85,498.71 and 33,661.40 is: 46,452.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,955.60 : 85,498.71 = 33,661.40 : x
  2. Step 2: Convert to fraction form
    61,955.60/85,498.71 = 33,661.40/x
  3. Step 3: Cross multiply
    61,955.60x = 85,498.71 × 33,661.40
  4. Step 4: Simplify right side
    61,955.60x = 2,878,006,276.79
  5. Step 5: Solve for x
    x = 2,878,006,276.79/61,955.60
  6. Step 6: Final answer
    x = 46,452.72

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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.