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Finding the Fourth Proportional to 539,435.40, 744,000.19 and 345,861.60

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Solution

The fourth proportional to 539,435.40, 744,000.19 and 345,861.60 is: 477,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,435.40 : 744,000.19 = 345,861.60 : x
  2. Step 2: Convert to fraction form
    539,435.40/744,000.19 = 345,861.60/x
  3. Step 3: Cross multiply
    539,435.40x = 744,000.19 × 345,861.60
  4. Step 4: Simplify right side
    539,435.40x = 257,321,096,113.70
  5. Step 5: Solve for x
    x = 257,321,096,113.70/539,435.40
  6. Step 6: Final answer
    x = 477,019.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.