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Finding the Fourth Proportional to 117,172.86, 161,697.63 and 63,456.63

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Solution

The fourth proportional to 117,172.86, 161,697.63 and 63,456.63 is: 87,569.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,172.86 : 161,697.63 = 63,456.63 : x
  2. Step 2: Convert to fraction form
    117,172.86/161,697.63 = 63,456.63/x
  3. Step 3: Cross multiply
    117,172.86x = 161,697.63 × 63,456.63
  4. Step 4: Simplify right side
    117,172.86x = 10,260,786,678.79
  5. Step 5: Solve for x
    x = 10,260,786,678.79/117,172.86
  6. Step 6: Final answer
    x = 87,569.65

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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.