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Finding the Fourth Proportional to 19,259.68, 28,889.52 and 7,574.08

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Solution

The fourth proportional to 19,259.68, 28,889.52 and 7,574.08 is: 11,361.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,259.68 : 28,889.52 = 7,574.08 : x
  2. Step 2: Convert to fraction form
    19,259.68/28,889.52 = 7,574.08/x
  3. Step 3: Cross multiply
    19,259.68x = 28,889.52 × 7,574.08
  4. Step 4: Simplify right side
    19,259.68x = 218,811,535.64
  5. Step 5: Solve for x
    x = 218,811,535.64/19,259.68
  6. Step 6: Final answer
    x = 11,361.12

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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.