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Finding the Fourth Proportional to 525,820.80, 789,314.40 and 408,014.40

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Solution

The fourth proportional to 525,820.80, 789,314.40 and 408,014.40 is: 612,474.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,820.80 : 789,314.40 = 408,014.40 : x
  2. Step 2: Convert to fraction form
    525,820.80/789,314.40 = 408,014.40/x
  3. Step 3: Cross multiply
    525,820.80x = 789,314.40 × 408,014.40
  4. Step 4: Simplify right side
    525,820.80x = 322,051,641,327.36
  5. Step 5: Solve for x
    x = 322,051,641,327.36/525,820.80
  6. Step 6: Final answer
    x = 612,474.14

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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.