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Finding the Fourth Proportional to 73,272.10, 109,580.10 and 61,462.30

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Solution

The fourth proportional to 73,272.10, 109,580.10 and 61,462.30 is: 91,918.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,272.10 : 109,580.10 = 61,462.30 : x
  2. Step 2: Convert to fraction form
    73,272.10/109,580.10 = 61,462.30/x
  3. Step 3: Cross multiply
    73,272.10x = 109,580.10 × 61,462.30
  4. Step 4: Simplify right side
    73,272.10x = 6,735,044,980.23
  5. Step 5: Solve for x
    x = 6,735,044,980.23/73,272.10
  6. Step 6: Final answer
    x = 91,918.27

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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.