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Finding the Fourth Proportional to 7,486.74, 11,208.51 and 5,758.74

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Solution

The fourth proportional to 7,486.74, 11,208.51 and 5,758.74 is: 8,621.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.74 : 11,208.51 = 5,758.74 : x
  2. Step 2: Convert to fraction form
    7,486.74/11,208.51 = 5,758.74/x
  3. Step 3: Cross multiply
    7,486.74x = 11,208.51 × 5,758.74
  4. Step 4: Simplify right side
    7,486.74x = 64,546,894.88
  5. Step 5: Solve for x
    x = 64,546,894.88/7,486.74
  6. Step 6: Final answer
    x = 8,621.50

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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.