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Finding the Fourth Proportional to 183,798.80, 275,698.20 and 78,628.40

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Solution

The fourth proportional to 183,798.80, 275,698.20 and 78,628.40 is: 117,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,798.80 : 275,698.20 = 78,628.40 : x
  2. Step 2: Convert to fraction form
    183,798.80/275,698.20 = 78,628.40/x
  3. Step 3: Cross multiply
    183,798.80x = 275,698.20 × 78,628.40
  4. Step 4: Simplify right side
    183,798.80x = 21,677,708,348.88
  5. Step 5: Solve for x
    x = 21,677,708,348.88/183,798.80
  6. Step 6: Final answer
    x = 117,942.60

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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.