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Finding the Fourth Proportional to 545,348.28, 818,219.28 and 190,414.60

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Solution

The fourth proportional to 545,348.28, 818,219.28 and 190,414.60 is: 285,690.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,348.28 : 818,219.28 = 190,414.60 : x
  2. Step 2: Convert to fraction form
    545,348.28/818,219.28 = 190,414.60/x
  3. Step 3: Cross multiply
    545,348.28x = 818,219.28 × 190,414.60
  4. Step 4: Simplify right side
    545,348.28x = 155,800,896,913.49
  5. Step 5: Solve for x
    x = 155,800,896,913.49/545,348.28
  6. Step 6: Final answer
    x = 285,690.64

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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.