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Finding the Fourth Proportional to 513,007.60, 769,511.40 and 453,958.60

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Solution

The fourth proportional to 513,007.60, 769,511.40 and 453,958.60 is: 680,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,007.60 : 769,511.40 = 453,958.60 : x
  2. Step 2: Convert to fraction form
    513,007.60/769,511.40 = 453,958.60/x
  3. Step 3: Cross multiply
    513,007.60x = 769,511.40 × 453,958.60
  4. Step 4: Simplify right side
    513,007.60x = 349,326,317,828.04
  5. Step 5: Solve for x
    x = 349,326,317,828.04/513,007.60
  6. Step 6: Final answer
    x = 680,937.90

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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.