Home / 192,865.95-289,345.12-80,483.65

Finding the Fourth Proportional to 192,865.95, 289,345.12 and 80,483.65

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Solution

The fourth proportional to 192,865.95, 289,345.12 and 80,483.65 is: 120,744.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,865.95 : 289,345.12 = 80,483.65 : x
  2. Step 2: Convert to fraction form
    192,865.95/289,345.12 = 80,483.65/x
  3. Step 3: Cross multiply
    192,865.95x = 289,345.12 × 80,483.65
  4. Step 4: Simplify right side
    192,865.95x = 23,287,550,442.72
  5. Step 5: Solve for x
    x = 23,287,550,442.72/192,865.95
  6. Step 6: Final answer
    x = 120,744.75

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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.