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Finding the Fourth Proportional to 678,846.76, 936,778.22 and 407,064.62

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Solution

The fourth proportional to 678,846.76, 936,778.22 and 407,064.62 is: 561,731.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,846.76 : 936,778.22 = 407,064.62 : x
  2. Step 2: Convert to fraction form
    678,846.76/936,778.22 = 407,064.62/x
  3. Step 3: Cross multiply
    678,846.76x = 936,778.22 × 407,064.62
  4. Step 4: Simplify right side
    678,846.76x = 381,329,270,148.58
  5. Step 5: Solve for x
    x = 381,329,270,148.58/678,846.76
  6. Step 6: Final answer
    x = 561,731.00

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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.