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Finding the Fourth Proportional to 150,388.71, 207,522.63 and 86,714.22

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Solution

The fourth proportional to 150,388.71, 207,522.63 and 86,714.22 is: 119,657.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,388.71 : 207,522.63 = 86,714.22 : x
  2. Step 2: Convert to fraction form
    150,388.71/207,522.63 = 86,714.22/x
  3. Step 3: Cross multiply
    150,388.71x = 207,522.63 × 86,714.22
  4. Step 4: Simplify right side
    150,388.71x = 17,995,162,992.80
  5. Step 5: Solve for x
    x = 17,995,162,992.80/150,388.71
  6. Step 6: Final answer
    x = 119,657.67

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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.