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Finding the Fourth Proportional to 525,620.20, 788,235.90 and 170,645.80

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Solution

The fourth proportional to 525,620.20, 788,235.90 and 170,645.80 is: 255,905.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,620.20 : 788,235.90 = 170,645.80 : x
  2. Step 2: Convert to fraction form
    525,620.20/788,235.90 = 170,645.80/x
  3. Step 3: Cross multiply
    525,620.20x = 788,235.90 × 170,645.80
  4. Step 4: Simplify right side
    525,620.20x = 134,509,145,744.22
  5. Step 5: Solve for x
    x = 134,509,145,744.22/525,620.20
  6. Step 6: Final answer
    x = 255,905.59

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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.