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Finding the Fourth Proportional to 445,432.60, 668,235.30 and 192,712.60

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Solution

The fourth proportional to 445,432.60, 668,235.30 and 192,712.60 is: 289,106.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,432.60 : 668,235.30 = 192,712.60 : x
  2. Step 2: Convert to fraction form
    445,432.60/668,235.30 = 192,712.60/x
  3. Step 3: Cross multiply
    445,432.60x = 668,235.30 × 192,712.60
  4. Step 4: Simplify right side
    445,432.60x = 128,777,362,074.78
  5. Step 5: Solve for x
    x = 128,777,362,074.78/445,432.60
  6. Step 6: Final answer
    x = 289,106.28

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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.