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Finding the Fourth Proportional to 678,576.01, 936,550.08 and 392,262.07

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Solution

The fourth proportional to 678,576.01, 936,550.08 and 392,262.07 is: 541,388.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,576.01 : 936,550.08 = 392,262.07 : x
  2. Step 2: Convert to fraction form
    678,576.01/936,550.08 = 392,262.07/x
  3. Step 3: Cross multiply
    678,576.01x = 936,550.08 × 392,262.07
  4. Step 4: Simplify right side
    678,576.01x = 367,373,073,039.47
  5. Step 5: Solve for x
    x = 367,373,073,039.47/678,576.01
  6. Step 6: Final answer
    x = 541,388.24

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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.