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Finding the Fourth Proportional to 545,349.28, 818,220.78 and 190,415.60

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Solution

The fourth proportional to 545,349.28, 818,220.78 and 190,415.60 is: 285,692.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,349.28 : 818,220.78 = 190,415.60 : x
  2. Step 2: Convert to fraction form
    545,349.28/818,220.78 = 190,415.60/x
  3. Step 3: Cross multiply
    545,349.28x = 818,220.78 × 190,415.60
  4. Step 4: Simplify right side
    545,349.28x = 155,802,000,756.17
  5. Step 5: Solve for x
    x = 155,802,000,756.17/545,349.28
  6. Step 6: Final answer
    x = 285,692.14

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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.