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Finding the Fourth Proportional to 117,155.46, 161,674.25 and 63,440.48

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Solution

The fourth proportional to 117,155.46, 161,674.25 and 63,440.48 is: 87,547.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,155.46 : 161,674.25 = 63,440.48 : x
  2. Step 2: Convert to fraction form
    117,155.46/161,674.25 = 63,440.48/x
  3. Step 3: Cross multiply
    117,155.46x = 161,674.25 × 63,440.48
  4. Step 4: Simplify right side
    117,155.46x = 10,256,692,023.64
  5. Step 5: Solve for x
    x = 10,256,692,023.64/117,155.46
  6. Step 6: Final answer
    x = 87,547.71

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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.