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Finding the Fourth Proportional to 58,361, 87,531.96 and 20,914.64

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Solution

The fourth proportional to 58,361, 87,531.96 and 20,914.64 is: 31,368.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,361 : 87,531.96 = 20,914.64 : x
  2. Step 2: Convert to fraction form
    58,361/87,531.96 = 20,914.64/x
  3. Step 3: Cross multiply
    58,361x = 87,531.96 × 20,914.64
  4. Step 4: Simplify right side
    58,361x = 1,830,699,431.89
  5. Step 5: Solve for x
    x = 1,830,699,431.89/58,361
  6. Step 6: Final answer
    x = 31,368.54

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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.