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Finding the Fourth Proportional to 831,605.20, 1,165,034.60 and 831,605.20

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Solution

The fourth proportional to 831,605.20, 1,165,034.60 and 831,605.20 is: 1,165,034.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,605.20 : 1,165,034.60 = 831,605.20 : x
  2. Step 2: Convert to fraction form
    831,605.20/1,165,034.60 = 831,605.20/x
  3. Step 3: Cross multiply
    831,605.20x = 1,165,034.60 × 831,605.20
  4. Step 4: Simplify right side
    831,605.20x = 968,848,831,539.92
  5. Step 5: Solve for x
    x = 968,848,831,539.92/831,605.20
  6. Step 6: Final answer
    x = 1,165,034.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.