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Finding the Fourth Proportional to 157,936.88, 217,952.38 and 86,316.88

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Solution

The fourth proportional to 157,936.88, 217,952.38 and 86,316.88 is: 119,117.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,936.88 : 217,952.38 = 86,316.88 : x
  2. Step 2: Convert to fraction form
    157,936.88/217,952.38 = 86,316.88/x
  3. Step 3: Cross multiply
    157,936.88x = 217,952.38 × 86,316.88
  4. Step 4: Simplify right side
    157,936.88x = 18,812,969,430.17
  5. Step 5: Solve for x
    x = 18,812,969,430.17/157,936.88
  6. Step 6: Final answer
    x = 119,117.01

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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.