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Finding the Fourth Proportional to 14,509.58, 21,770.54 and 7,928.08

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Solution

The fourth proportional to 14,509.58, 21,770.54 and 7,928.08 is: 11,895.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,509.58 : 21,770.54 = 7,928.08 : x
  2. Step 2: Convert to fraction form
    14,509.58/21,770.54 = 7,928.08/x
  3. Step 3: Cross multiply
    14,509.58x = 21,770.54 × 7,928.08
  4. Step 4: Simplify right side
    14,509.58x = 172,598,488.70
  5. Step 5: Solve for x
    x = 172,598,488.70/14,509.58
  6. Step 6: Final answer
    x = 11,895.48

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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.