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Finding the Fourth Proportional to 98,849.88, 136,411.56 and 56,409.12

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Solution

The fourth proportional to 98,849.88, 136,411.56 and 56,409.12 is: 77,843.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,849.88 : 136,411.56 = 56,409.12 : x
  2. Step 2: Convert to fraction form
    98,849.88/136,411.56 = 56,409.12/x
  3. Step 3: Cross multiply
    98,849.88x = 136,411.56 × 56,409.12
  4. Step 4: Simplify right side
    98,849.88x = 7,694,856,057.43
  5. Step 5: Solve for x
    x = 7,694,856,057.43/98,849.88
  6. Step 6: Final answer
    x = 77,843.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.