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Finding the Fourth Proportional to 111,895.47, 154,415.75 and 61,594.47

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Solution

The fourth proportional to 111,895.47, 154,415.75 and 61,594.47 is: 85,000.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,895.47 : 154,415.75 = 61,594.47 : x
  2. Step 2: Convert to fraction form
    111,895.47/154,415.75 = 61,594.47/x
  3. Step 3: Cross multiply
    111,895.47x = 154,415.75 × 61,594.47
  4. Step 4: Simplify right side
    111,895.47x = 9,511,156,280.90
  5. Step 5: Solve for x
    x = 9,511,156,280.90/111,895.47
  6. Step 6: Final answer
    x = 85,000.37

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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.