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Finding the Fourth Proportional to 383,089.35, 528,409.98 and 239,600.28

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Solution

The fourth proportional to 383,089.35, 528,409.98 and 239,600.28 is: 330,489.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,089.35 : 528,409.98 = 239,600.28 : x
  2. Step 2: Convert to fraction form
    383,089.35/528,409.98 = 239,600.28/x
  3. Step 3: Cross multiply
    383,089.35x = 528,409.98 × 239,600.28
  4. Step 4: Simplify right side
    383,089.35x = 126,607,179,162.79
  5. Step 5: Solve for x
    x = 126,607,179,162.79/383,089.35
  6. Step 6: Final answer
    x = 330,489.95

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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.