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Finding the Fourth Proportional to 30,603.69, 45,912.62 and 9,542.61

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Solution

The fourth proportional to 30,603.69, 45,912.62 and 9,542.61 is: 14,316.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,603.69 : 45,912.62 = 9,542.61 : x
  2. Step 2: Convert to fraction form
    30,603.69/45,912.62 = 9,542.61/x
  3. Step 3: Cross multiply
    30,603.69x = 45,912.62 × 9,542.61
  4. Step 4: Simplify right side
    30,603.69x = 438,126,250.59
  5. Step 5: Solve for x
    x = 438,126,250.59/30,603.69
  6. Step 6: Final answer
    x = 14,316.12

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1.5x scale

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.