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Finding the Fourth Proportional to 14,216.64, 19,619.04 and 7,928.64

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Solution

The fourth proportional to 14,216.64, 19,619.04 and 7,928.64 is: 10,941.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,216.64 : 19,619.04 = 7,928.64 : x
  2. Step 2: Convert to fraction form
    14,216.64/19,619.04 = 7,928.64/x
  3. Step 3: Cross multiply
    14,216.64x = 19,619.04 × 7,928.64
  4. Step 4: Simplify right side
    14,216.64x = 155,552,305.31
  5. Step 5: Solve for x
    x = 155,552,305.31/14,216.64
  6. Step 6: Final answer
    x = 10,941.57

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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.