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Finding the Fourth Proportional to 714,662.96, 986,190.66 and 392,371.24

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Solution

The fourth proportional to 714,662.96, 986,190.66 and 392,371.24 is: 541,448.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,662.96 : 986,190.66 = 392,371.24 : x
  2. Step 2: Convert to fraction form
    714,662.96/986,190.66 = 392,371.24/x
  3. Step 3: Cross multiply
    714,662.96x = 986,190.66 × 392,371.24
  4. Step 4: Simplify right side
    714,662.96x = 386,952,852,140.62
  5. Step 5: Solve for x
    x = 386,952,852,140.62/714,662.96
  6. Step 6: Final answer
    x = 541,448.03

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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.