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Finding the Fourth Proportional to 40,984.80, 61,477.20 and 14,680.80

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Solution

The fourth proportional to 40,984.80, 61,477.20 and 14,680.80 is: 22,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,984.80 : 61,477.20 = 14,680.80 : x
  2. Step 2: Convert to fraction form
    40,984.80/61,477.20 = 14,680.80/x
  3. Step 3: Cross multiply
    40,984.80x = 61,477.20 × 14,680.80
  4. Step 4: Simplify right side
    40,984.80x = 902,534,477.76
  5. Step 5: Solve for x
    x = 902,534,477.76/40,984.80
  6. Step 6: Final answer
    x = 22,021.20

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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.