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Finding the Fourth Proportional to 826,544.40, 1,238,783.40 and 352,676.40

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Solution

The fourth proportional to 826,544.40, 1,238,783.40 and 352,676.40 is: 528,573.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,544.40 : 1,238,783.40 = 352,676.40 : x
  2. Step 2: Convert to fraction form
    826,544.40/1,238,783.40 = 352,676.40/x
  3. Step 3: Cross multiply
    826,544.40x = 1,238,783.40 × 352,676.40
  4. Step 4: Simplify right side
    826,544.40x = 436,889,669,891.76
  5. Step 5: Solve for x
    x = 436,889,669,891.76/826,544.40
  6. Step 6: Final answer
    x = 528,573.75

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Double scale
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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.