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Finding the Fourth Proportional to 539,562.90, 809,344.35 and 434,586.90

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Solution

The fourth proportional to 539,562.90, 809,344.35 and 434,586.90 is: 651,880.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,562.90 : 809,344.35 = 434,586.90 : x
  2. Step 2: Convert to fraction form
    539,562.90/809,344.35 = 434,586.90/x
  3. Step 3: Cross multiply
    539,562.90x = 809,344.35 × 434,586.90
  4. Step 4: Simplify right side
    539,562.90x = 351,730,452,099.02
  5. Step 5: Solve for x
    x = 351,730,452,099.02/539,562.90
  6. Step 6: Final answer
    x = 651,880.35

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Half scale
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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.