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Finding the Fourth Proportional to 19,958.46, 29,811.30 and 15,529.80

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Solution

The fourth proportional to 19,958.46, 29,811.30 and 15,529.80 is: 23,196.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,958.46 : 29,811.30 = 15,529.80 : x
  2. Step 2: Convert to fraction form
    19,958.46/29,811.30 = 15,529.80/x
  3. Step 3: Cross multiply
    19,958.46x = 29,811.30 × 15,529.80
  4. Step 4: Simplify right side
    19,958.46x = 462,963,526.74
  5. Step 5: Solve for x
    x = 462,963,526.74/19,958.46
  6. Step 6: Final answer
    x = 23,196.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.