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Finding the Fourth Proportional to 112,164.98, 154,788.23 and 61,863.98

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Solution

The fourth proportional to 112,164.98, 154,788.23 and 61,863.98 is: 85,372.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,164.98 : 154,788.23 = 61,863.98 : x
  2. Step 2: Convert to fraction form
    112,164.98/154,788.23 = 61,863.98/x
  3. Step 3: Cross multiply
    112,164.98x = 154,788.23 × 61,863.98
  4. Step 4: Simplify right side
    112,164.98x = 9,575,815,345.67
  5. Step 5: Solve for x
    x = 9,575,815,345.67/112,164.98
  6. Step 6: Final answer
    x = 85,372.60

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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.