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Finding the Fourth Proportional to 73,287.10, 109,602.60 and 61,477.30

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Solution

The fourth proportional to 73,287.10, 109,602.60 and 61,477.30 is: 91,940.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,287.10 : 109,602.60 = 61,477.30 : x
  2. Step 2: Convert to fraction form
    73,287.10/109,602.60 = 61,477.30/x
  3. Step 3: Cross multiply
    73,287.10x = 109,602.60 × 61,477.30
  4. Step 4: Simplify right side
    73,287.10x = 6,738,071,920.98
  5. Step 5: Solve for x
    x = 6,738,071,920.98/73,287.10
  6. Step 6: Final answer
    x = 91,940.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.