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Finding the Fourth Proportional to 111,274.64, 153,513.96 and 63,518.48

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Solution

The fourth proportional to 111,274.64, 153,513.96 and 63,518.48 is: 87,629.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,274.64 : 153,513.96 = 63,518.48 : x
  2. Step 2: Convert to fraction form
    111,274.64/153,513.96 = 63,518.48/x
  3. Step 3: Cross multiply
    111,274.64x = 153,513.96 × 63,518.48
  4. Step 4: Simplify right side
    111,274.64x = 9,750,973,397.98
  5. Step 5: Solve for x
    x = 9,750,973,397.98/111,274.64
  6. Step 6: Final answer
    x = 87,629.79

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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.