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Finding the Fourth Proportional to 68,788.62, 103,212.12 and 37,587.42

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Solution

The fourth proportional to 68,788.62, 103,212.12 and 37,587.42 is: 56,397.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,788.62 : 103,212.12 = 37,587.42 : x
  2. Step 2: Convert to fraction form
    68,788.62/103,212.12 = 37,587.42/x
  3. Step 3: Cross multiply
    68,788.62x = 103,212.12 × 37,587.42
  4. Step 4: Simplify right side
    68,788.62x = 3,879,477,303.53
  5. Step 5: Solve for x
    x = 3,879,477,303.53/68,788.62
  6. Step 6: Final answer
    x = 56,397.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.