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Finding the Fourth Proportional to 325,840.10, 488,905.95 and 148,255.70

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Solution

The fourth proportional to 325,840.10, 488,905.95 and 148,255.70 is: 222,449.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,840.10 : 488,905.95 = 148,255.70 : x
  2. Step 2: Convert to fraction form
    325,840.10/488,905.95 = 148,255.70/x
  3. Step 3: Cross multiply
    325,840.10x = 488,905.95 × 148,255.70
  4. Step 4: Simplify right side
    325,840.10x = 72,483,093,851.42
  5. Step 5: Solve for x
    x = 72,483,093,851.42/325,840.10
  6. Step 6: Final answer
    x = 222,449.89

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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.