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Finding the Fourth Proportional to 14,609.90, 21,900.96 and 4,742.27

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Solution

The fourth proportional to 14,609.90, 21,900.96 and 4,742.27 is: 7,108.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,609.90 : 21,900.96 = 4,742.27 : x
  2. Step 2: Convert to fraction form
    14,609.90/21,900.96 = 4,742.27/x
  3. Step 3: Cross multiply
    14,609.90x = 21,900.96 × 4,742.27
  4. Step 4: Simplify right side
    14,609.90x = 103,860,156.07
  5. Step 5: Solve for x
    x = 103,860,156.07/14,609.90
  6. Step 6: Final answer
    x = 7,108.89

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1.5x scale

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.