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Finding the Fourth Proportional to 39,480.72, 59,232.96 and 14,532.72

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Solution

The fourth proportional to 39,480.72, 59,232.96 and 14,532.72 is: 21,803.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,480.72 : 59,232.96 = 14,532.72 : x
  2. Step 2: Convert to fraction form
    39,480.72/59,232.96 = 14,532.72/x
  3. Step 3: Cross multiply
    39,480.72x = 59,232.96 × 14,532.72
  4. Step 4: Simplify right side
    39,480.72x = 860,816,022.45
  5. Step 5: Solve for x
    x = 860,816,022.45/39,480.72
  6. Step 6: Final answer
    x = 21,803.45

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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.