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Finding the Fourth Proportional to 157,887.59, 217,878.47 and 86,270.09

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Solution

The fourth proportional to 157,887.59, 217,878.47 and 86,270.09 is: 119,049.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,887.59 : 217,878.47 = 86,270.09 : x
  2. Step 2: Convert to fraction form
    157,887.59/217,878.47 = 86,270.09/x
  3. Step 3: Cross multiply
    157,887.59x = 217,878.47 × 86,270.09
  4. Step 4: Simplify right side
    157,887.59x = 18,796,395,215.96
  5. Step 5: Solve for x
    x = 18,796,395,215.96/157,887.59
  6. Step 6: Final answer
    x = 119,049.22

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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.