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Finding the Fourth Proportional to 157,467.60, 236,201.40 and 86,362.76

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Solution

The fourth proportional to 157,467.60, 236,201.40 and 86,362.76 is: 129,544.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,467.60 : 236,201.40 = 86,362.76 : x
  2. Step 2: Convert to fraction form
    157,467.60/236,201.40 = 86,362.76/x
  3. Step 3: Cross multiply
    157,467.60x = 236,201.40 × 86,362.76
  4. Step 4: Simplify right side
    157,467.60x = 20,399,004,819.86
  5. Step 5: Solve for x
    x = 20,399,004,819.86/157,467.60
  6. Step 6: Final answer
    x = 129,544.14

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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.