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Finding the Fourth Proportional to 547,784.60, 821,676.90 and 173,845.40

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Solution

The fourth proportional to 547,784.60, 821,676.90 and 173,845.40 is: 260,768.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,784.60 : 821,676.90 = 173,845.40 : x
  2. Step 2: Convert to fraction form
    547,784.60/821,676.90 = 173,845.40/x
  3. Step 3: Cross multiply
    547,784.60x = 821,676.90 × 173,845.40
  4. Step 4: Simplify right side
    547,784.60x = 142,844,749,351.26
  5. Step 5: Solve for x
    x = 142,844,749,351.26/547,784.60
  6. Step 6: Final answer
    x = 260,768.10

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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.