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Finding the Fourth Proportional to 19,574.76, 29,361.08 and 6,425.40

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Solution

The fourth proportional to 19,574.76, 29,361.08 and 6,425.40 is: 9,637.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,574.76 : 29,361.08 = 6,425.40 : x
  2. Step 2: Convert to fraction form
    19,574.76/29,361.08 = 6,425.40/x
  3. Step 3: Cross multiply
    19,574.76x = 29,361.08 × 6,425.40
  4. Step 4: Simplify right side
    19,574.76x = 188,656,683.43
  5. Step 5: Solve for x
    x = 188,656,683.43/19,574.76
  6. Step 6: Final answer
    x = 9,637.75

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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.