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Finding the Fourth Proportional to 25,795.62, 38,675.09 and 9,987.30

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Solution

The fourth proportional to 25,795.62, 38,675.09 and 9,987.30 is: 14,973.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,795.62 : 38,675.09 = 9,987.30 : x
  2. Step 2: Convert to fraction form
    25,795.62/38,675.09 = 9,987.30/x
  3. Step 3: Cross multiply
    25,795.62x = 38,675.09 × 9,987.30
  4. Step 4: Simplify right side
    25,795.62x = 386,259,676.42
  5. Step 5: Solve for x
    x = 386,259,676.42/25,795.62
  6. Step 6: Final answer
    x = 14,973.85

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1.5x scale

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.