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Finding the Fourth Proportional to 111,602.74, 154,012.91 and 60,615.96

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Solution

The fourth proportional to 111,602.74, 154,012.91 and 60,615.96 is: 83,650.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,602.74 : 154,012.91 = 60,615.96 : x
  2. Step 2: Convert to fraction form
    111,602.74/154,012.91 = 60,615.96/x
  3. Step 3: Cross multiply
    111,602.74x = 154,012.91 × 60,615.96
  4. Step 4: Simplify right side
    111,602.74x = 9,335,640,392.04
  5. Step 5: Solve for x
    x = 9,335,640,392.04/111,602.74
  6. Step 6: Final answer
    x = 83,650.64

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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.