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Finding the Fourth Proportional to 103,625.25, 143,002.85 and 58,913.25

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Solution

The fourth proportional to 103,625.25, 143,002.85 and 58,913.25 is: 81,300.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,625.25 : 143,002.85 = 58,913.25 : x
  2. Step 2: Convert to fraction form
    103,625.25/143,002.85 = 58,913.25/x
  3. Step 3: Cross multiply
    103,625.25x = 143,002.85 × 58,913.25
  4. Step 4: Simplify right side
    103,625.25x = 8,424,762,358.20
  5. Step 5: Solve for x
    x = 8,424,762,358.20/103,625.25
  6. Step 6: Final answer
    x = 81,300.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.