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Finding the Fourth Proportional to 58,585.25, 87,878.01 and 21,171.75

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Solution

The fourth proportional to 58,585.25, 87,878.01 and 21,171.75 is: 31,757.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,585.25 : 87,878.01 = 21,171.75 : x
  2. Step 2: Convert to fraction form
    58,585.25/87,878.01 = 21,171.75/x
  3. Step 3: Cross multiply
    58,585.25x = 87,878.01 × 21,171.75
  4. Step 4: Simplify right side
    58,585.25x = 1,860,531,258.22
  5. Step 5: Solve for x
    x = 1,860,531,258.22/58,585.25
  6. Step 6: Final answer
    x = 31,757.67

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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.