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Finding the Fourth Proportional to 111,895.19, 154,415.39 and 61,594.19

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Solution

The fourth proportional to 111,895.19, 154,415.39 and 61,594.19 is: 85,000.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,895.19 : 154,415.39 = 61,594.19 : x
  2. Step 2: Convert to fraction form
    111,895.19/154,415.39 = 61,594.19/x
  3. Step 3: Cross multiply
    111,895.19x = 154,415.39 × 61,594.19
  4. Step 4: Simplify right side
    111,895.19x = 9,511,090,870.58
  5. Step 5: Solve for x
    x = 9,511,090,870.58/111,895.19
  6. Step 6: Final answer
    x = 85,000.00

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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.