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Finding the Fourth Proportional to 573,640.20, 860,460.30 and 384,683.40

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Solution

The fourth proportional to 573,640.20, 860,460.30 and 384,683.40 is: 577,025.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,640.20 : 860,460.30 = 384,683.40 : x
  2. Step 2: Convert to fraction form
    573,640.20/860,460.30 = 384,683.40/x
  3. Step 3: Cross multiply
    573,640.20x = 860,460.30 × 384,683.40
  4. Step 4: Simplify right side
    573,640.20x = 331,004,793,769.02
  5. Step 5: Solve for x
    x = 331,004,793,769.02/573,640.20
  6. Step 6: Final answer
    x = 577,025.10

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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.