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Finding the Fourth Proportional to 128,059.41, 192,111.66 and 43,799.79

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Solution

The fourth proportional to 128,059.41, 192,111.66 and 43,799.79 is: 65,707.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,059.41 : 192,111.66 = 43,799.79 : x
  2. Step 2: Convert to fraction form
    128,059.41/192,111.66 = 43,799.79/x
  3. Step 3: Cross multiply
    128,059.41x = 192,111.66 × 43,799.79
  4. Step 4: Simplify right side
    128,059.41x = 8,414,450,364.55
  5. Step 5: Solve for x
    x = 8,414,450,364.55/128,059.41
  6. Step 6: Final answer
    x = 65,707.40

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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.