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Finding the Fourth Proportional to 539,602.90, 809,404.35 and 434,626.90

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Solution

The fourth proportional to 539,602.90, 809,404.35 and 434,626.90 is: 651,940.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,602.90 : 809,404.35 = 434,626.90 : x
  2. Step 2: Convert to fraction form
    539,602.90/809,404.35 = 434,626.90/x
  3. Step 3: Cross multiply
    539,602.90x = 809,404.35 × 434,626.90
  4. Step 4: Simplify right side
    539,602.90x = 351,788,903,487.02
  5. Step 5: Solve for x
    x = 351,788,903,487.02/539,602.90
  6. Step 6: Final answer
    x = 651,940.35

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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.