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Finding the Fourth Proportional to 636,021.88, 876,785.58 and 444,440.44

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Solution

The fourth proportional to 636,021.88, 876,785.58 and 444,440.44 is: 612,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,021.88 : 876,785.58 = 444,440.44 : x
  2. Step 2: Convert to fraction form
    636,021.88/876,785.58 = 444,440.44/x
  3. Step 3: Cross multiply
    636,021.88x = 876,785.58 × 444,440.44
  4. Step 4: Simplify right side
    636,021.88x = 389,678,968,960.86
  5. Step 5: Solve for x
    x = 389,678,968,960.86/636,021.88
  6. Step 6: Final answer
    x = 612,681.70

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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.