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Finding the Fourth Proportional to 58,266.40, 87,421.20 and 23,231.20

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Solution

The fourth proportional to 58,266.40, 87,421.20 and 23,231.20 is: 34,855.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,266.40 : 87,421.20 = 23,231.20 : x
  2. Step 2: Convert to fraction form
    58,266.40/87,421.20 = 23,231.20/x
  3. Step 3: Cross multiply
    58,266.40x = 87,421.20 × 23,231.20
  4. Step 4: Simplify right side
    58,266.40x = 2,030,899,381.44
  5. Step 5: Solve for x
    x = 2,030,899,381.44/58,266.40
  6. Step 6: Final answer
    x = 34,855.41

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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.