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Finding the Fourth Proportional to 263,798.20, 395,867.40 and 145,554.40

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Solution

The fourth proportional to 263,798.20, 395,867.40 and 145,554.40 is: 218,425.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,798.20 : 395,867.40 = 145,554.40 : x
  2. Step 2: Convert to fraction form
    263,798.20/395,867.40 = 145,554.40/x
  3. Step 3: Cross multiply
    263,798.20x = 395,867.40 × 145,554.40
  4. Step 4: Simplify right side
    263,798.20x = 57,620,241,886.56
  5. Step 5: Solve for x
    x = 57,620,241,886.56/263,798.20
  6. Step 6: Final answer
    x = 218,425.46

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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.