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Finding the Fourth Proportional to 35,517.40, 53,300.40 and 19,722.40

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Solution

The fourth proportional to 35,517.40, 53,300.40 and 19,722.40 is: 29,597.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,517.40 : 53,300.40 = 19,722.40 : x
  2. Step 2: Convert to fraction form
    35,517.40/53,300.40 = 19,722.40/x
  3. Step 3: Cross multiply
    35,517.40x = 53,300.40 × 19,722.40
  4. Step 4: Simplify right side
    35,517.40x = 1,051,211,808.96
  5. Step 5: Solve for x
    x = 1,051,211,808.96/35,517.40
  6. Step 6: Final answer
    x = 29,597.09

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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.