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Finding the Fourth Proportional to 19,588.40, 29,339.40 and 16,996.40

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Solution

The fourth proportional to 19,588.40, 29,339.40 and 16,996.40 is: 25,457.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,588.40 : 29,339.40 = 16,996.40 : x
  2. Step 2: Convert to fraction form
    19,588.40/29,339.40 = 16,996.40/x
  3. Step 3: Cross multiply
    19,588.40x = 29,339.40 × 16,996.40
  4. Step 4: Simplify right side
    19,588.40x = 498,664,178.16
  5. Step 5: Solve for x
    x = 498,664,178.16/19,588.40
  6. Step 6: Final answer
    x = 25,457.12

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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.