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Finding the Fourth Proportional to 111,185.64, 153,676.17 and 98,347.95

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Solution

The fourth proportional to 111,185.64, 153,676.17 and 98,347.95 is: 135,932.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,185.64 : 153,676.17 = 98,347.95 : x
  2. Step 2: Convert to fraction form
    111,185.64/153,676.17 = 98,347.95/x
  3. Step 3: Cross multiply
    111,185.64x = 153,676.17 × 98,347.95
  4. Step 4: Simplify right side
    111,185.64x = 15,113,736,283.35
  5. Step 5: Solve for x
    x = 15,113,736,283.35/111,185.64
  6. Step 6: Final answer
    x = 135,932.45

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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.