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Finding the Fourth Proportional to 58,625.40, 87,916.56 and 20,145.99

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Solution

The fourth proportional to 58,625.40, 87,916.56 and 20,145.99 is: 30,211.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,625.40 : 87,916.56 = 20,145.99 : x
  2. Step 2: Convert to fraction form
    58,625.40/87,916.56 = 20,145.99/x
  3. Step 3: Cross multiply
    58,625.40x = 87,916.56 × 20,145.99
  4. Step 4: Simplify right side
    58,625.40x = 1,771,165,699.01
  5. Step 5: Solve for x
    x = 1,771,165,699.01/58,625.40
  6. Step 6: Final answer
    x = 30,211.58

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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.