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Finding the Fourth Proportional to 539,459.40, 809,189.10 and 202,499.40

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Solution

The fourth proportional to 539,459.40, 809,189.10 and 202,499.40 is: 303,749.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,459.40 : 809,189.10 = 202,499.40 : x
  2. Step 2: Convert to fraction form
    539,459.40/809,189.10 = 202,499.40/x
  3. Step 3: Cross multiply
    539,459.40x = 809,189.10 × 202,499.40
  4. Step 4: Simplify right side
    539,459.40x = 163,860,307,236.54
  5. Step 5: Solve for x
    x = 163,860,307,236.54/539,459.40
  6. Step 6: Final answer
    x = 303,749.10

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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.