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Finding the Fourth Proportional to 19,368.42, 29,065.56 and 7,056.42

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Solution

The fourth proportional to 19,368.42, 29,065.56 and 7,056.42 is: 10,589.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,368.42 : 29,065.56 = 7,056.42 : x
  2. Step 2: Convert to fraction form
    19,368.42/29,065.56 = 7,056.42/x
  3. Step 3: Cross multiply
    19,368.42x = 29,065.56 × 7,056.42
  4. Step 4: Simplify right side
    19,368.42x = 205,098,798.90
  5. Step 5: Solve for x
    x = 205,098,798.90/19,368.42
  6. Step 6: Final answer
    x = 10,589.34

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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.