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Finding the Fourth Proportional to 6,409.21, 8,837.88 and 5,062.45

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Solution

The fourth proportional to 6,409.21, 8,837.88 and 5,062.45 is: 6,980.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,409.21 : 8,837.88 = 5,062.45 : x
  2. Step 2: Convert to fraction form
    6,409.21/8,837.88 = 5,062.45/x
  3. Step 3: Cross multiply
    6,409.21x = 8,837.88 × 5,062.45
  4. Step 4: Simplify right side
    6,409.21x = 44,741,325.61
  5. Step 5: Solve for x
    x = 44,741,325.61/6,409.21
  6. Step 6: Final answer
    x = 6,980.79

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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.