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Finding the Fourth Proportional to 517,976.16, 776,963.16 and 163,021.20

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Solution

The fourth proportional to 517,976.16, 776,963.16 and 163,021.20 is: 244,531.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,976.16 : 776,963.16 = 163,021.20 : x
  2. Step 2: Convert to fraction form
    517,976.16/776,963.16 = 163,021.20/x
  3. Step 3: Cross multiply
    517,976.16x = 776,963.16 × 163,021.20
  4. Step 4: Simplify right side
    517,976.16x = 126,661,466,698.99
  5. Step 5: Solve for x
    x = 126,661,466,698.99/517,976.16
  6. Step 6: Final answer
    x = 244,531.46

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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.