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Finding the Fourth Proportional to 28,043.96, 42,069.18 and 7,269.08

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Solution

The fourth proportional to 28,043.96, 42,069.18 and 7,269.08 is: 10,904.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,043.96 : 42,069.18 = 7,269.08 : x
  2. Step 2: Convert to fraction form
    28,043.96/42,069.18 = 7,269.08/x
  3. Step 3: Cross multiply
    28,043.96x = 42,069.18 × 7,269.08
  4. Step 4: Simplify right side
    28,043.96x = 305,804,234.95
  5. Step 5: Solve for x
    x = 305,804,234.95/28,043.96
  6. Step 6: Final answer
    x = 10,904.46

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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.