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Finding the Fourth Proportional to 127,693.66, 191,538.72 and 43,512.49

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Solution

The fourth proportional to 127,693.66, 191,538.72 and 43,512.49 is: 65,268.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,693.66 : 191,538.72 = 43,512.49 : x
  2. Step 2: Convert to fraction form
    127,693.66/191,538.72 = 43,512.49/x
  3. Step 3: Cross multiply
    127,693.66x = 191,538.72 × 43,512.49
  4. Step 4: Simplify right side
    127,693.66x = 8,334,325,463.36
  5. Step 5: Solve for x
    x = 8,334,325,463.36/127,693.66
  6. Step 6: Final answer
    x = 65,268.12

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1.5x scale

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.