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Finding the Fourth Proportional to 186,097.81, 279,261.53 and 86,239.39

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Solution

The fourth proportional to 186,097.81, 279,261.53 and 86,239.39 is: 129,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,097.81 : 279,261.53 = 86,239.39 : x
  2. Step 2: Convert to fraction form
    186,097.81/279,261.53 = 86,239.39/x
  3. Step 3: Cross multiply
    186,097.81x = 279,261.53 × 86,239.39
  4. Step 4: Simplify right side
    186,097.81x = 24,083,342,170.16
  5. Step 5: Solve for x
    x = 24,083,342,170.16/186,097.81
  6. Step 6: Final answer
    x = 129,412.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.