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Finding the Fourth Proportional to 28,446.48, 42,622.38 and 17,319.48

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Solution

The fourth proportional to 28,446.48, 42,622.38 and 17,319.48 is: 25,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.48 : 42,622.38 = 17,319.48 : x
  2. Step 2: Convert to fraction form
    28,446.48/42,622.38 = 17,319.48/x
  3. Step 3: Cross multiply
    28,446.48x = 42,622.38 × 17,319.48
  4. Step 4: Simplify right side
    28,446.48x = 738,197,457.96
  5. Step 5: Solve for x
    x = 738,197,457.96/28,446.48
  6. Step 6: Final answer
    x = 25,950.40

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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.