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Finding the Fourth Proportional to 19,296.40, 28,901.40 and 14,899.60

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Solution

The fourth proportional to 19,296.40, 28,901.40 and 14,899.60 is: 22,316.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,296.40 : 28,901.40 = 14,899.60 : x
  2. Step 2: Convert to fraction form
    19,296.40/28,901.40 = 14,899.60/x
  3. Step 3: Cross multiply
    19,296.40x = 28,901.40 × 14,899.60
  4. Step 4: Simplify right side
    19,296.40x = 430,619,299.44
  5. Step 5: Solve for x
    x = 430,619,299.44/19,296.40
  6. Step 6: Final answer
    x = 22,316.04

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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.