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Finding the Fourth Proportional to 525,794.60, 789,210.30 and 259,855.40

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Solution

The fourth proportional to 525,794.60, 789,210.30 and 259,855.40 is: 390,039.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,794.60 : 789,210.30 = 259,855.40 : x
  2. Step 2: Convert to fraction form
    525,794.60/789,210.30 = 259,855.40/x
  3. Step 3: Cross multiply
    525,794.60x = 789,210.30 × 259,855.40
  4. Step 4: Simplify right side
    525,794.60x = 205,080,558,190.62
  5. Step 5: Solve for x
    x = 205,080,558,190.62/525,794.60
  6. Step 6: Final answer
    x = 390,039.30

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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.