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Finding the Fourth Proportional to 525,689.40, 788,015.70 and 259,231.80

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Solution

The fourth proportional to 525,689.40, 788,015.70 and 259,231.80 is: 388,592.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,689.40 : 788,015.70 = 259,231.80 : x
  2. Step 2: Convert to fraction form
    525,689.40/788,015.70 = 259,231.80/x
  3. Step 3: Cross multiply
    525,689.40x = 788,015.70 × 259,231.80
  4. Step 4: Simplify right side
    525,689.40x = 204,278,728,339.26
  5. Step 5: Solve for x
    x = 204,278,728,339.26/525,689.40
  6. Step 6: Final answer
    x = 388,592.06

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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.