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Finding the Fourth Proportional to 92,994.58, 128,115.57 and 64,651.06

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Solution

The fourth proportional to 92,994.58, 128,115.57 and 64,651.06 is: 89,067.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,994.58 : 128,115.57 = 64,651.06 : x
  2. Step 2: Convert to fraction form
    92,994.58/128,115.57 = 64,651.06/x
  3. Step 3: Cross multiply
    92,994.58x = 128,115.57 × 64,651.06
  4. Step 4: Simplify right side
    92,994.58x = 8,282,807,403.00
  5. Step 5: Solve for x
    x = 8,282,807,403.00/92,994.58
  6. Step 6: Final answer
    x = 89,067.64

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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.