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Finding the Fourth Proportional to 14,703.78, 22,060.80 and 6,913.20

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Solution

The fourth proportional to 14,703.78, 22,060.80 and 6,913.20 is: 10,372.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,703.78 : 22,060.80 = 6,913.20 : x
  2. Step 2: Convert to fraction form
    14,703.78/22,060.80 = 6,913.20/x
  3. Step 3: Cross multiply
    14,703.78x = 22,060.80 × 6,913.20
  4. Step 4: Simplify right side
    14,703.78x = 152,510,722.56
  5. Step 5: Solve for x
    x = 152,510,722.56/14,703.78
  6. Step 6: Final answer
    x = 10,372.21

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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.