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Finding the Fourth Proportional to 511,793.60, 767,690.40 and 455,806.40

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Solution

The fourth proportional to 511,793.60, 767,690.40 and 455,806.40 is: 683,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,793.60 : 767,690.40 = 455,806.40 : x
  2. Step 2: Convert to fraction form
    511,793.60/767,690.40 = 455,806.40/x
  3. Step 3: Cross multiply
    511,793.60x = 767,690.40 × 455,806.40
  4. Step 4: Simplify right side
    511,793.60x = 349,918,197,538.56
  5. Step 5: Solve for x
    x = 349,918,197,538.56/511,793.60
  6. Step 6: Final answer
    x = 683,709.60

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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.