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Finding the Fourth Proportional to 25,790.75, 38,703.42 and 9,374.75

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Solution

The fourth proportional to 25,790.75, 38,703.42 and 9,374.75 is: 14,068.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,790.75 : 38,703.42 = 9,374.75 : x
  2. Step 2: Convert to fraction form
    25,790.75/38,703.42 = 9,374.75/x
  3. Step 3: Cross multiply
    25,790.75x = 38,703.42 × 9,374.75
  4. Step 4: Simplify right side
    25,790.75x = 362,834,886.65
  5. Step 5: Solve for x
    x = 362,834,886.65/25,790.75
  6. Step 6: Final answer
    x = 14,068.41

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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.