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Finding the Fourth Proportional to 14,835.20, 20,468.64 and 8,551.04

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Solution

The fourth proportional to 14,835.20, 20,468.64 and 8,551.04 is: 11,798.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,835.20 : 20,468.64 = 8,551.04 : x
  2. Step 2: Convert to fraction form
    14,835.20/20,468.64 = 8,551.04/x
  3. Step 3: Cross multiply
    14,835.20x = 20,468.64 × 8,551.04
  4. Step 4: Simplify right side
    14,835.20x = 175,028,159.39
  5. Step 5: Solve for x
    x = 175,028,159.39/14,835.20
  6. Step 6: Final answer
    x = 11,798.17

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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.