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Finding the Fourth Proportional to 111,695.02, 154,142.56 and 63,963.74

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Solution

The fourth proportional to 111,695.02, 154,142.56 and 63,963.74 is: 88,271.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,695.02 : 154,142.56 = 63,963.74 : x
  2. Step 2: Convert to fraction form
    111,695.02/154,142.56 = 63,963.74/x
  3. Step 3: Cross multiply
    111,695.02x = 154,142.56 × 63,963.74
  4. Step 4: Simplify right side
    111,695.02x = 9,859,534,630.77
  5. Step 5: Solve for x
    x = 9,859,534,630.77/111,695.02
  6. Step 6: Final answer
    x = 88,271.93

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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.