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Finding the Fourth Proportional to 8,436.74, 11,642.86 and 4,900.18

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Solution

The fourth proportional to 8,436.74, 11,642.86 and 4,900.18 is: 6,762.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.74 : 11,642.86 = 4,900.18 : x
  2. Step 2: Convert to fraction form
    8,436.74/11,642.86 = 4,900.18/x
  3. Step 3: Cross multiply
    8,436.74x = 11,642.86 × 4,900.18
  4. Step 4: Simplify right side
    8,436.74x = 57,052,109.71
  5. Step 5: Solve for x
    x = 57,052,109.71/8,436.74
  6. Step 6: Final answer
    x = 6,762.34

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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.