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Finding the Fourth Proportional to 539,443.40, 809,165.10 and 434,467.40

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Solution

The fourth proportional to 539,443.40, 809,165.10 and 434,467.40 is: 651,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,443.40 : 809,165.10 = 434,467.40 : x
  2. Step 2: Convert to fraction form
    539,443.40/809,165.10 = 434,467.40/x
  3. Step 3: Cross multiply
    539,443.40x = 809,165.10 × 434,467.40
  4. Step 4: Simplify right side
    539,443.40x = 351,555,857,167.74
  5. Step 5: Solve for x
    x = 351,555,857,167.74/539,443.40
  6. Step 6: Final answer
    x = 651,701.10

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Half scale
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Double scale
Find fourth proportional to 539,444.40, 809,166.60 and 434,468.40
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.