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Finding the Fourth Proportional to 6,361.21, 8,782.86 and 4,866.53

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Solution

The fourth proportional to 6,361.21, 8,782.86 and 4,866.53 is: 6,719.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,361.21 : 8,782.86 = 4,866.53 : x
  2. Step 2: Convert to fraction form
    6,361.21/8,782.86 = 4,866.53/x
  3. Step 3: Cross multiply
    6,361.21x = 8,782.86 × 4,866.53
  4. Step 4: Simplify right side
    6,361.21x = 42,742,034.35
  5. Step 5: Solve for x
    x = 42,742,034.35/6,361.21
  6. Step 6: Final answer
    x = 6,719.17

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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.