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Finding the Fourth Proportional to 263,628.76, 395,510.58 and 76,640.26

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Solution

The fourth proportional to 263,628.76, 395,510.58 and 76,640.26 is: 114,980.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,628.76 : 395,510.58 = 76,640.26 : x
  2. Step 2: Convert to fraction form
    263,628.76/395,510.58 = 76,640.26/x
  3. Step 3: Cross multiply
    263,628.76x = 395,510.58 × 76,640.26
  4. Step 4: Simplify right side
    263,628.76x = 30,312,033,683.95
  5. Step 5: Solve for x
    x = 30,312,033,683.95/263,628.76
  6. Step 6: Final answer
    x = 114,980.00

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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.