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Finding the Fourth Proportional to 192,810.30, 289,215.45 and 113,883.90

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Solution

The fourth proportional to 192,810.30, 289,215.45 and 113,883.90 is: 170,825.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,810.30 : 289,215.45 = 113,883.90 : x
  2. Step 2: Convert to fraction form
    192,810.30/289,215.45 = 113,883.90/x
  3. Step 3: Cross multiply
    192,810.30x = 289,215.45 × 113,883.90
  4. Step 4: Simplify right side
    192,810.30x = 32,936,983,386.26
  5. Step 5: Solve for x
    x = 32,936,983,386.26/192,810.30
  6. Step 6: Final answer
    x = 170,825.85

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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.