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Finding the Fourth Proportional to 153,154.56, 211,353.24 and 86,086.56

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Solution

The fourth proportional to 153,154.56, 211,353.24 and 86,086.56 is: 118,799.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,154.56 : 211,353.24 = 86,086.56 : x
  2. Step 2: Convert to fraction form
    153,154.56/211,353.24 = 86,086.56/x
  3. Step 3: Cross multiply
    153,154.56x = 211,353.24 × 86,086.56
  4. Step 4: Simplify right side
    153,154.56x = 18,194,673,376.45
  5. Step 5: Solve for x
    x = 18,194,673,376.45/153,154.56
  6. Step 6: Final answer
    x = 118,799.42

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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.