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Finding the Fourth Proportional to 661,786.76, 992,790.84 and 519,626.28

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Solution

The fourth proportional to 661,786.76, 992,790.84 and 519,626.28 is: 779,526.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,786.76 : 992,790.84 = 519,626.28 : x
  2. Step 2: Convert to fraction form
    661,786.76/992,790.84 = 519,626.28/x
  3. Step 3: Cross multiply
    661,786.76x = 992,790.84 × 519,626.28
  4. Step 4: Simplify right side
    661,786.76x = 515,880,211,007.28
  5. Step 5: Solve for x
    x = 515,880,211,007.28/661,786.76
  6. Step 6: Final answer
    x = 779,526.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.