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Finding the Fourth Proportional to 451,920.64, 623,647.20 and 250,716.64

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Solution

The fourth proportional to 451,920.64, 623,647.20 and 250,716.64 is: 345,987.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,920.64 : 623,647.20 = 250,716.64 : x
  2. Step 2: Convert to fraction form
    451,920.64/623,647.20 = 250,716.64/x
  3. Step 3: Cross multiply
    451,920.64x = 623,647.20 × 250,716.64
  4. Step 4: Simplify right side
    451,920.64x = 156,358,730,529.41
  5. Step 5: Solve for x
    x = 156,358,730,529.41/451,920.64
  6. Step 6: Final answer
    x = 345,987.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.