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Finding the Fourth Proportional to 539,743.40, 809,615.10 and 434,767.40

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Solution

The fourth proportional to 539,743.40, 809,615.10 and 434,767.40 is: 652,151.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,743.40 : 809,615.10 = 434,767.40 : x
  2. Step 2: Convert to fraction form
    539,743.40/809,615.10 = 434,767.40/x
  3. Step 3: Cross multiply
    539,743.40x = 809,615.10 × 434,767.40
  4. Step 4: Simplify right side
    539,743.40x = 351,994,252,027.74
  5. Step 5: Solve for x
    x = 351,994,252,027.74/539,743.40
  6. Step 6: Final answer
    x = 652,151.10

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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.