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Finding the Fourth Proportional to 67,142.25, 100,622.65 and 25,566.57

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Solution

The fourth proportional to 67,142.25, 100,622.65 and 25,566.57 is: 38,315.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,142.25 : 100,622.65 = 25,566.57 : x
  2. Step 2: Convert to fraction form
    67,142.25/100,622.65 = 25,566.57/x
  3. Step 3: Cross multiply
    67,142.25x = 100,622.65 × 25,566.57
  4. Step 4: Simplify right side
    67,142.25x = 2,572,576,024.81
  5. Step 5: Solve for x
    x = 2,572,576,024.81/67,142.25
  6. Step 6: Final answer
    x = 38,315.31

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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.