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Finding the Fourth Proportional to 562,940.69, 776,665.36 and 321,049.37

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Solution

The fourth proportional to 562,940.69, 776,665.36 and 321,049.37 is: 442,938.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,940.69 : 776,665.36 = 321,049.37 : x
  2. Step 2: Convert to fraction form
    562,940.69/776,665.36 = 321,049.37/x
  3. Step 3: Cross multiply
    562,940.69x = 776,665.36 × 321,049.37
  4. Step 4: Simplify right side
    562,940.69x = 249,347,926,871.80
  5. Step 5: Solve for x
    x = 249,347,926,871.80/562,940.69
  6. Step 6: Final answer
    x = 442,938.19

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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.