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Finding the Fourth Proportional to 111,498.12, 153,864.36 and 61,197.12

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Solution

The fourth proportional to 111,498.12, 153,864.36 and 61,197.12 is: 84,450.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,498.12 : 153,864.36 = 61,197.12 : x
  2. Step 2: Convert to fraction form
    111,498.12/153,864.36 = 61,197.12/x
  3. Step 3: Cross multiply
    111,498.12x = 153,864.36 × 61,197.12
  4. Step 4: Simplify right side
    111,498.12x = 9,416,055,702.64
  5. Step 5: Solve for x
    x = 9,416,055,702.64/111,498.12
  6. Step 6: Final answer
    x = 84,450.35

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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.