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Finding the Fourth Proportional to 156,995.49, 216,659.46 and 89,940.45

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Solution

The fourth proportional to 156,995.49, 216,659.46 and 89,940.45 is: 124,121.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,995.49 : 216,659.46 = 89,940.45 : x
  2. Step 2: Convert to fraction form
    156,995.49/216,659.46 = 89,940.45/x
  3. Step 3: Cross multiply
    156,995.49x = 216,659.46 × 89,940.45
  4. Step 4: Simplify right side
    156,995.49x = 19,486,449,329.16
  5. Step 5: Solve for x
    x = 19,486,449,329.16/156,995.49
  6. Step 6: Final answer
    x = 124,121.08

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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.