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Finding the Fourth Proportional to 25,967.16, 38,933.70 and 9,318.84

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Solution

The fourth proportional to 25,967.16, 38,933.70 and 9,318.84 is: 13,972.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,967.16 : 38,933.70 = 9,318.84 : x
  2. Step 2: Convert to fraction form
    25,967.16/38,933.70 = 9,318.84/x
  3. Step 3: Cross multiply
    25,967.16x = 38,933.70 × 9,318.84
  4. Step 4: Simplify right side
    25,967.16x = 362,816,920.91
  5. Step 5: Solve for x
    x = 362,816,920.91/25,967.16
  6. Step 6: Final answer
    x = 13,972.14

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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.