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Finding the Fourth Proportional to 28,958.99, 39,951.70 and 17,619.39

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Solution

The fourth proportional to 28,958.99, 39,951.70 and 17,619.39 is: 24,307.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,958.99 : 39,951.70 = 17,619.39 : x
  2. Step 2: Convert to fraction form
    28,958.99/39,951.70 = 17,619.39/x
  3. Step 3: Cross multiply
    28,958.99x = 39,951.70 × 17,619.39
  4. Step 4: Simplify right side
    28,958.99x = 703,924,539.41
  5. Step 5: Solve for x
    x = 703,924,539.41/28,958.99
  6. Step 6: Final answer
    x = 24,307.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.