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Finding the Fourth Proportional to 14,266.68, 21,401.43 and 4,905.45

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Solution

The fourth proportional to 14,266.68, 21,401.43 and 4,905.45 is: 7,358.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,266.68 : 21,401.43 = 4,905.45 : x
  2. Step 2: Convert to fraction form
    14,266.68/21,401.43 = 4,905.45/x
  3. Step 3: Cross multiply
    14,266.68x = 21,401.43 × 4,905.45
  4. Step 4: Simplify right side
    14,266.68x = 104,983,644.79
  5. Step 5: Solve for x
    x = 104,983,644.79/14,266.68
  6. Step 6: Final answer
    x = 7,358.66

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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.