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Finding the Fourth Proportional to 7,907.90, 11,863.79 and 5,572.46

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Solution

The fourth proportional to 7,907.90, 11,863.79 and 5,572.46 is: 8,360.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.90 : 11,863.79 = 5,572.46 : x
  2. Step 2: Convert to fraction form
    7,907.90/11,863.79 = 5,572.46/x
  3. Step 3: Cross multiply
    7,907.90x = 11,863.79 × 5,572.46
  4. Step 4: Simplify right side
    7,907.90x = 66,110,495.22
  5. Step 5: Solve for x
    x = 66,110,495.22/7,907.90
  6. Step 6: Final answer
    x = 8,360.06

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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.