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Finding the Fourth Proportional to 157,656.36, 217,564.59 and 86,034.81

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Solution

The fourth proportional to 157,656.36, 217,564.59 and 86,034.81 is: 118,727.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,656.36 : 217,564.59 = 86,034.81 : x
  2. Step 2: Convert to fraction form
    157,656.36/217,564.59 = 86,034.81/x
  3. Step 3: Cross multiply
    157,656.36x = 217,564.59 × 86,034.81
  4. Step 4: Simplify right side
    157,656.36x = 18,718,128,163.38
  5. Step 5: Solve for x
    x = 18,718,128,163.38/157,656.36
  6. Step 6: Final answer
    x = 118,727.39

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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.