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Finding the Fourth Proportional to 61,686.88, 85,112.58 and 36,195.64

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Solution

The fourth proportional to 61,686.88, 85,112.58 and 36,195.64 is: 49,941.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,686.88 : 85,112.58 = 36,195.64 : x
  2. Step 2: Convert to fraction form
    61,686.88/85,112.58 = 36,195.64/x
  3. Step 3: Cross multiply
    61,686.88x = 85,112.58 × 36,195.64
  4. Step 4: Simplify right side
    61,686.88x = 3,080,704,305.15
  5. Step 5: Solve for x
    x = 3,080,704,305.15/61,686.88
  6. Step 6: Final answer
    x = 49,941.00

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1.5x scale

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.