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Finding the Fourth Proportional to 128,771.65, 192,993.45 and 93,670.30

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Solution

The fourth proportional to 128,771.65, 192,993.45 and 93,670.30 is: 140,386.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,771.65 : 192,993.45 = 93,670.30 : x
  2. Step 2: Convert to fraction form
    128,771.65/192,993.45 = 93,670.30/x
  3. Step 3: Cross multiply
    128,771.65x = 192,993.45 × 93,670.30
  4. Step 4: Simplify right side
    128,771.65x = 18,077,754,359.54
  5. Step 5: Solve for x
    x = 18,077,754,359.54/128,771.65
  6. Step 6: Final answer
    x = 140,386.14

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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.