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Finding the Fourth Proportional to 525,698.10, 789,065.55 and 259,758.90

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Solution

The fourth proportional to 525,698.10, 789,065.55 and 259,758.90 is: 389,894.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,698.10 : 789,065.55 = 259,758.90 : x
  2. Step 2: Convert to fraction form
    525,698.10/789,065.55 = 259,758.90/x
  3. Step 3: Cross multiply
    525,698.10x = 789,065.55 × 259,758.90
  4. Step 4: Simplify right side
    525,698.10x = 204,966,799,295.90
  5. Step 5: Solve for x
    x = 204,966,799,295.90/525,698.10
  6. Step 6: Final answer
    x = 389,894.50

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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.