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Finding the Fourth Proportional to 408,317.40, 612,038.70 and 183,639.60

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Solution

The fourth proportional to 408,317.40, 612,038.70 and 183,639.60 is: 275,262.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,317.40 : 612,038.70 = 183,639.60 : x
  2. Step 2: Convert to fraction form
    408,317.40/612,038.70 = 183,639.60/x
  3. Step 3: Cross multiply
    408,317.40x = 612,038.70 × 183,639.60
  4. Step 4: Simplify right side
    408,317.40x = 112,394,542,052.52
  5. Step 5: Solve for x
    x = 112,394,542,052.52/408,317.40
  6. Step 6: Final answer
    x = 275,262.68

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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.