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Finding the Fourth Proportional to 809,346.60, 1,214,019.90 and 557,404.20

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Solution

The fourth proportional to 809,346.60, 1,214,019.90 and 557,404.20 is: 836,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,346.60 : 1,214,019.90 = 557,404.20 : x
  2. Step 2: Convert to fraction form
    809,346.60/1,214,019.90 = 557,404.20/x
  3. Step 3: Cross multiply
    809,346.60x = 1,214,019.90 × 557,404.20
  4. Step 4: Simplify right side
    809,346.60x = 676,699,791,143.58
  5. Step 5: Solve for x
    x = 676,699,791,143.58/809,346.60
  6. Step 6: Final answer
    x = 836,106.30

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Half scale
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Double scale
Find fourth proportional to 809,347.60, 1,214,021.40 and 557,405.20
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.