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Finding the Fourth Proportional to 19,482.60, 29,221.74 and 5,631.60

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Solution

The fourth proportional to 19,482.60, 29,221.74 and 5,631.60 is: 8,446.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,482.60 : 29,221.74 = 5,631.60 : x
  2. Step 2: Convert to fraction form
    19,482.60/29,221.74 = 5,631.60/x
  3. Step 3: Cross multiply
    19,482.60x = 29,221.74 × 5,631.60
  4. Step 4: Simplify right side
    19,482.60x = 164,565,150.98
  5. Step 5: Solve for x
    x = 164,565,150.98/19,482.60
  6. Step 6: Final answer
    x = 8,446.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.