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Finding the Fourth Proportional to 103,960.52, 155,916.93 and 29,085.98

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Solution

The fourth proportional to 103,960.52, 155,916.93 and 29,085.98 is: 43,622.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,960.52 : 155,916.93 = 29,085.98 : x
  2. Step 2: Convert to fraction form
    103,960.52/155,916.93 = 29,085.98/x
  3. Step 3: Cross multiply
    103,960.52x = 155,916.93 × 29,085.98
  4. Step 4: Simplify right side
    103,960.52x = 4,534,996,707.64
  5. Step 5: Solve for x
    x = 4,534,996,707.64/103,960.52
  6. Step 6: Final answer
    x = 43,622.30

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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.