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Finding the Fourth Proportional to 43,772.19, 65,678.79 and 21,573.46

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Solution

The fourth proportional to 43,772.19, 65,678.79 and 21,573.46 is: 32,370.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,772.19 : 65,678.79 = 21,573.46 : x
  2. Step 2: Convert to fraction form
    43,772.19/65,678.79 = 21,573.46/x
  3. Step 3: Cross multiply
    43,772.19x = 65,678.79 × 21,573.46
  4. Step 4: Simplify right side
    43,772.19x = 1,416,918,748.91
  5. Step 5: Solve for x
    x = 1,416,918,748.91/43,772.19
  6. Step 6: Final answer
    x = 32,370.30

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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.