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Finding the Fourth Proportional to 25,783.88, 38,682.30 and 7,315.88

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Solution

The fourth proportional to 25,783.88, 38,682.30 and 7,315.88 is: 10,975.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,783.88 : 38,682.30 = 7,315.88 : x
  2. Step 2: Convert to fraction form
    25,783.88/38,682.30 = 7,315.88/x
  3. Step 3: Cross multiply
    25,783.88x = 38,682.30 × 7,315.88
  4. Step 4: Simplify right side
    25,783.88x = 282,994,871.51
  5. Step 5: Solve for x
    x = 282,994,871.51/25,783.88
  6. Step 6: Final answer
    x = 10,975.65

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.