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Finding the Fourth Proportional to 25,946.32, 38,916.84 and 9,305.68

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Solution

The fourth proportional to 25,946.32, 38,916.84 and 9,305.68 is: 13,957.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,946.32 : 38,916.84 = 9,305.68 : x
  2. Step 2: Convert to fraction form
    25,946.32/38,916.84 = 9,305.68/x
  3. Step 3: Cross multiply
    25,946.32x = 38,916.84 × 9,305.68
  4. Step 4: Simplify right side
    25,946.32x = 362,147,659.65
  5. Step 5: Solve for x
    x = 362,147,659.65/25,946.32
  6. Step 6: Final answer
    x = 13,957.57

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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.