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Finding the Fourth Proportional to 525,910.40, 788,347.20 and 259,452.80

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Solution

The fourth proportional to 525,910.40, 788,347.20 and 259,452.80 is: 388,923.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,910.40 : 788,347.20 = 259,452.80 : x
  2. Step 2: Convert to fraction form
    525,910.40/788,347.20 = 259,452.80/x
  3. Step 3: Cross multiply
    525,910.40x = 788,347.20 × 259,452.80
  4. Step 4: Simplify right side
    525,910.40x = 204,538,888,412.16
  5. Step 5: Solve for x
    x = 204,538,888,412.16/525,910.40
  6. Step 6: Final answer
    x = 388,923.45

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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.