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Finding the Fourth Proportional to 94,735.20, 142,102.80 and 66,472.80

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Solution

The fourth proportional to 94,735.20, 142,102.80 and 66,472.80 is: 99,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,735.20 : 142,102.80 = 66,472.80 : x
  2. Step 2: Convert to fraction form
    94,735.20/142,102.80 = 66,472.80/x
  3. Step 3: Cross multiply
    94,735.20x = 142,102.80 × 66,472.80
  4. Step 4: Simplify right side
    94,735.20x = 9,445,971,003.84
  5. Step 5: Solve for x
    x = 9,445,971,003.84/94,735.20
  6. Step 6: Final answer
    x = 99,709.20

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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.