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Finding the Fourth Proportional to 285,762.20, 394,173.54 and 183,920.90

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Solution

The fourth proportional to 285,762.20, 394,173.54 and 183,920.90 is: 253,696.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,762.20 : 394,173.54 = 183,920.90 : x
  2. Step 2: Convert to fraction form
    285,762.20/394,173.54 = 183,920.90/x
  3. Step 3: Cross multiply
    285,762.20x = 394,173.54 × 183,920.90
  4. Step 4: Simplify right side
    285,762.20x = 72,496,750,262.12
  5. Step 5: Solve for x
    x = 72,496,750,262.12/285,762.20
  6. Step 6: Final answer
    x = 253,696.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.