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Finding the Fourth Proportional to 496,893.60, 745,340.40 and 439,812.90

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Solution

The fourth proportional to 496,893.60, 745,340.40 and 439,812.90 is: 659,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,893.60 : 745,340.40 = 439,812.90 : x
  2. Step 2: Convert to fraction form
    496,893.60/745,340.40 = 439,812.90/x
  3. Step 3: Cross multiply
    496,893.60x = 745,340.40 × 439,812.90
  4. Step 4: Simplify right side
    496,893.60x = 327,810,322,811.16
  5. Step 5: Solve for x
    x = 327,810,322,811.16/496,893.60
  6. Step 6: Final answer
    x = 659,719.35

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Similar ratio
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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.