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Finding the Fourth Proportional to 103,060.45, 154,389.34 and 71,033.83

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Solution

The fourth proportional to 103,060.45, 154,389.34 and 71,033.83 is: 106,411.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,060.45 : 154,389.34 = 71,033.83 : x
  2. Step 2: Convert to fraction form
    103,060.45/154,389.34 = 71,033.83/x
  3. Step 3: Cross multiply
    103,060.45x = 154,389.34 × 71,033.83
  4. Step 4: Simplify right side
    103,060.45x = 10,966,865,004.26
  5. Step 5: Solve for x
    x = 10,966,865,004.26/103,060.45
  6. Step 6: Final answer
    x = 106,411.97

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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.