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Finding the Fourth Proportional to 7,907.76, 10,912.52 and 4,370.90

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Solution

The fourth proportional to 7,907.76, 10,912.52 and 4,370.90 is: 6,031.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.76 : 10,912.52 = 4,370.90 : x
  2. Step 2: Convert to fraction form
    7,907.76/10,912.52 = 4,370.90/x
  3. Step 3: Cross multiply
    7,907.76x = 10,912.52 × 4,370.90
  4. Step 4: Simplify right side
    7,907.76x = 47,697,490.03
  5. Step 5: Solve for x
    x = 47,697,490.03/7,907.76
  6. Step 6: Final answer
    x = 6,031.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.