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Finding the Fourth Proportional to 128,693.01, 192,973.68 and 53,792.73

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Solution

The fourth proportional to 128,693.01, 192,973.68 and 53,792.73 is: 80,661.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,693.01 : 192,973.68 = 53,792.73 : x
  2. Step 2: Convert to fraction form
    128,693.01/192,973.68 = 53,792.73/x
  3. Step 3: Cross multiply
    128,693.01x = 192,973.68 × 53,792.73
  4. Step 4: Simplify right side
    128,693.01x = 10,380,581,065.35
  5. Step 5: Solve for x
    x = 10,380,581,065.35/128,693.01
  6. Step 6: Final answer
    x = 80,661.58

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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.