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Finding the Fourth Proportional to 112,141.80, 154,755.94 and 61,840.36

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Solution

The fourth proportional to 112,141.80, 154,755.94 and 61,840.36 is: 85,339.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,141.80 : 154,755.94 = 61,840.36 : x
  2. Step 2: Convert to fraction form
    112,141.80/154,755.94 = 61,840.36/x
  3. Step 3: Cross multiply
    112,141.80x = 154,755.94 × 61,840.36
  4. Step 4: Simplify right side
    112,141.80x = 9,570,163,041.74
  5. Step 5: Solve for x
    x = 9,570,163,041.74/112,141.80
  6. Step 6: Final answer
    x = 85,339.84

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.