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Finding the Fourth Proportional to 545,339.84, 818,383.45 and 190,353.90

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Solution

The fourth proportional to 545,339.84, 818,383.45 and 190,353.90 is: 285,661.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,339.84 : 818,383.45 = 190,353.90 : x
  2. Step 2: Convert to fraction form
    545,339.84/818,383.45 = 190,353.90/x
  3. Step 3: Cross multiply
    545,339.84x = 818,383.45 × 190,353.90
  4. Step 4: Simplify right side
    545,339.84x = 155,782,479,749.52
  5. Step 5: Solve for x
    x = 155,782,479,749.52/545,339.84
  6. Step 6: Final answer
    x = 285,661.29

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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.