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Finding the Fourth Proportional to 17,690.40, 26,535.60 and 14,871.60

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Solution

The fourth proportional to 17,690.40, 26,535.60 and 14,871.60 is: 22,307.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,690.40 : 26,535.60 = 14,871.60 : x
  2. Step 2: Convert to fraction form
    17,690.40/26,535.60 = 14,871.60/x
  3. Step 3: Cross multiply
    17,690.40x = 26,535.60 × 14,871.60
  4. Step 4: Simplify right side
    17,690.40x = 394,626,828.96
  5. Step 5: Solve for x
    x = 394,626,828.96/17,690.40
  6. Step 6: Final answer
    x = 22,307.40

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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.