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Finding the Fourth Proportional to 455,748.40, 683,622.60 and 123,324.40

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Solution

The fourth proportional to 455,748.40, 683,622.60 and 123,324.40 is: 184,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,748.40 : 683,622.60 = 123,324.40 : x
  2. Step 2: Convert to fraction form
    455,748.40/683,622.60 = 123,324.40/x
  3. Step 3: Cross multiply
    455,748.40x = 683,622.60 × 123,324.40
  4. Step 4: Simplify right side
    455,748.40x = 84,307,346,971.44
  5. Step 5: Solve for x
    x = 84,307,346,971.44/455,748.40
  6. Step 6: Final answer
    x = 184,986.60

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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.