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Finding the Fourth Proportional to 58,290.40, 87,457.20 and 23,255.20

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Solution

The fourth proportional to 58,290.40, 87,457.20 and 23,255.20 is: 34,891.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,290.40 : 87,457.20 = 23,255.20 : x
  2. Step 2: Convert to fraction form
    58,290.40/87,457.20 = 23,255.20/x
  3. Step 3: Cross multiply
    58,290.40x = 87,457.20 × 23,255.20
  4. Step 4: Simplify right side
    58,290.40x = 2,033,834,677.44
  5. Step 5: Solve for x
    x = 2,033,834,677.44/58,290.40
  6. Step 6: Final answer
    x = 34,891.42

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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.