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Finding the Fourth Proportional to 117,180.76, 161,709.06 and 63,465.64

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Solution

The fourth proportional to 117,180.76, 161,709.06 and 63,465.64 is: 87,582.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,180.76 : 161,709.06 = 63,465.64 : x
  2. Step 2: Convert to fraction form
    117,180.76/161,709.06 = 63,465.64/x
  3. Step 3: Cross multiply
    117,180.76x = 161,709.06 × 63,465.64
  4. Step 4: Simplify right side
    117,180.76x = 10,262,968,986.70
  5. Step 5: Solve for x
    x = 10,262,968,986.70/117,180.76
  6. Step 6: Final answer
    x = 87,582.37

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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.