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Finding the Fourth Proportional to 58,627.12, 80,905.28 and 31,770.28

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Solution

The fourth proportional to 58,627.12, 80,905.28 and 31,770.28 is: 43,842.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,627.12 : 80,905.28 = 31,770.28 : x
  2. Step 2: Convert to fraction form
    58,627.12/80,905.28 = 31,770.28/x
  3. Step 3: Cross multiply
    58,627.12x = 80,905.28 × 31,770.28
  4. Step 4: Simplify right side
    58,627.12x = 2,570,383,399.08
  5. Step 5: Solve for x
    x = 2,570,383,399.08/58,627.12
  6. Step 6: Final answer
    x = 43,842.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.