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Finding the Fourth Proportional to 30,603.72, 45,918.54 and 16,736.52

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Solution

The fourth proportional to 30,603.72, 45,918.54 and 16,736.52 is: 25,111.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,603.72 : 45,918.54 = 16,736.52 : x
  2. Step 2: Convert to fraction form
    30,603.72/45,918.54 = 16,736.52/x
  3. Step 3: Cross multiply
    30,603.72x = 45,918.54 × 16,736.52
  4. Step 4: Simplify right side
    30,603.72x = 768,516,563.08
  5. Step 5: Solve for x
    x = 768,516,563.08/30,603.72
  6. Step 6: Final answer
    x = 25,111.87

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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.