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Finding the Fourth Proportional to 157,843.44, 217,816.02 and 86,210.28

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Solution

The fourth proportional to 157,843.44, 217,816.02 and 86,210.28 is: 118,965.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,843.44 : 217,816.02 = 86,210.28 : x
  2. Step 2: Convert to fraction form
    157,843.44/217,816.02 = 86,210.28/x
  3. Step 3: Cross multiply
    157,843.44x = 217,816.02 × 86,210.28
  4. Step 4: Simplify right side
    157,843.44x = 18,777,980,072.69
  5. Step 5: Solve for x
    x = 18,777,980,072.69/157,843.44
  6. Step 6: Final answer
    x = 118,965.86

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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.