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Finding the Fourth Proportional to 14,475.60, 19,975.68 and 8,187.84

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Solution

The fourth proportional to 14,475.60, 19,975.68 and 8,187.84 is: 11,298.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,475.60 : 19,975.68 = 8,187.84 : x
  2. Step 2: Convert to fraction form
    14,475.60/19,975.68 = 8,187.84/x
  3. Step 3: Cross multiply
    14,475.60x = 19,975.68 × 8,187.84
  4. Step 4: Simplify right side
    14,475.60x = 163,557,671.73
  5. Step 5: Solve for x
    x = 163,557,671.73/14,475.60
  6. Step 6: Final answer
    x = 11,298.85

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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.