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Finding the Fourth Proportional to 403,872.40, 604,642.20 and 246,408.40

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Solution

The fourth proportional to 403,872.40, 604,642.20 and 246,408.40 is: 368,900.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,872.40 : 604,642.20 = 246,408.40 : x
  2. Step 2: Convert to fraction form
    403,872.40/604,642.20 = 246,408.40/x
  3. Step 3: Cross multiply
    403,872.40x = 604,642.20 × 246,408.40
  4. Step 4: Simplify right side
    403,872.40x = 148,988,917,074.48
  5. Step 5: Solve for x
    x = 148,988,917,074.48/403,872.40
  6. Step 6: Final answer
    x = 368,900.96

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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.