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Finding the Fourth Proportional to 51,108, 70,526.94 and 28,446.36

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Solution

The fourth proportional to 51,108, 70,526.94 and 28,446.36 is: 39,254.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,108 : 70,526.94 = 28,446.36 : x
  2. Step 2: Convert to fraction form
    51,108/70,526.94 = 28,446.36/x
  3. Step 3: Cross multiply
    51,108x = 70,526.94 × 28,446.36
  4. Step 4: Simplify right side
    51,108x = 2,006,234,724.94
  5. Step 5: Solve for x
    x = 2,006,234,724.94/51,108
  6. Step 6: Final answer
    x = 39,254.81

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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.