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Finding the Fourth Proportional to 675,477.71, 928,257.96 and 644,253.83

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Solution

The fourth proportional to 675,477.71, 928,257.96 and 644,253.83 is: 885,349.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,477.71 : 928,257.96 = 644,253.83 : x
  2. Step 2: Convert to fraction form
    675,477.71/928,257.96 = 644,253.83/x
  3. Step 3: Cross multiply
    675,477.71x = 928,257.96 × 644,253.83
  4. Step 4: Simplify right side
    675,477.71x = 598,033,741,316.70
  5. Step 5: Solve for x
    x = 598,033,741,316.70/675,477.71
  6. Step 6: Final answer
    x = 885,349.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.