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Finding the Fourth Proportional to 455,598.90, 683,398.35 and 189,270.90

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Solution

The fourth proportional to 455,598.90, 683,398.35 and 189,270.90 is: 283,906.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,598.90 : 683,398.35 = 189,270.90 : x
  2. Step 2: Convert to fraction form
    455,598.90/683,398.35 = 189,270.90/x
  3. Step 3: Cross multiply
    455,598.90x = 683,398.35 × 189,270.90
  4. Step 4: Simplify right side
    455,598.90x = 129,347,420,763.02
  5. Step 5: Solve for x
    x = 129,347,420,763.02/455,598.90
  6. Step 6: Final answer
    x = 283,906.35

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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.