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Finding the Fourth Proportional to 15,920.76, 23,880.74 and 7,606.65

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Solution

The fourth proportional to 15,920.76, 23,880.74 and 7,606.65 is: 11,409.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920.76 : 23,880.74 = 7,606.65 : x
  2. Step 2: Convert to fraction form
    15,920.76/23,880.74 = 7,606.65/x
  3. Step 3: Cross multiply
    15,920.76x = 23,880.74 × 7,606.65
  4. Step 4: Simplify right side
    15,920.76x = 181,652,392.89
  5. Step 5: Solve for x
    x = 181,652,392.89/15,920.76
  6. Step 6: Final answer
    x = 11,409.78

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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.