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Finding the Fourth Proportional to 13,762.70, 20,644.06 and 13,061.52

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Solution

The fourth proportional to 13,762.70, 20,644.06 and 13,061.52 is: 19,592.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,762.70 : 20,644.06 = 13,061.52 : x
  2. Step 2: Convert to fraction form
    13,762.70/20,644.06 = 13,061.52/x
  3. Step 3: Cross multiply
    13,762.70x = 20,644.06 × 13,061.52
  4. Step 4: Simplify right side
    13,762.70x = 269,642,802.57
  5. Step 5: Solve for x
    x = 269,642,802.57/13,762.70
  6. Step 6: Final answer
    x = 19,592.29

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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.