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Finding the Fourth Proportional to 404,728.80, 607,093.20 and 194,258.40

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Solution

The fourth proportional to 404,728.80, 607,093.20 and 194,258.40 is: 291,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,728.80 : 607,093.20 = 194,258.40 : x
  2. Step 2: Convert to fraction form
    404,728.80/607,093.20 = 194,258.40/x
  3. Step 3: Cross multiply
    404,728.80x = 607,093.20 × 194,258.40
  4. Step 4: Simplify right side
    404,728.80x = 117,932,953,682.88
  5. Step 5: Solve for x
    x = 117,932,953,682.88/404,728.80
  6. Step 6: Final answer
    x = 291,387.60

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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.