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Finding the Fourth Proportional to 260,797.60, 391,050.60 and 120,382.48

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Solution

The fourth proportional to 260,797.60, 391,050.60 and 120,382.48 is: 180,506.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,797.60 : 391,050.60 = 120,382.48 : x
  2. Step 2: Convert to fraction form
    260,797.60/391,050.60 = 120,382.48/x
  3. Step 3: Cross multiply
    260,797.60x = 391,050.60 × 120,382.48
  4. Step 4: Simplify right side
    260,797.60x = 47,075,641,033.49
  5. Step 5: Solve for x
    x = 47,075,641,033.49/260,797.60
  6. Step 6: Final answer
    x = 180,506.42

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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.