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Finding the Fourth Proportional to 910,570.60, 1,365,855.90 and 863,914.60

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Solution

The fourth proportional to 910,570.60, 1,365,855.90 and 863,914.60 is: 1,295,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,570.60 : 1,365,855.90 = 863,914.60 : x
  2. Step 2: Convert to fraction form
    910,570.60/1,365,855.90 = 863,914.60/x
  3. Step 3: Cross multiply
    910,570.60x = 1,365,855.90 × 863,914.60
  4. Step 4: Simplify right side
    910,570.60x = 1,179,982,853,506.14
  5. Step 5: Solve for x
    x = 1,179,982,853,506.14/910,570.60
  6. Step 6: Final answer
    x = 1,295,871.90

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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.