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Finding the Fourth Proportional to 966,921.80, 1,355,090.20 and 966,921.80

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Solution

The fourth proportional to 966,921.80, 1,355,090.20 and 966,921.80 is: 1,355,090.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    966,921.80 : 1,355,090.20 = 966,921.80 : x
  2. Step 2: Convert to fraction form
    966,921.80/1,355,090.20 = 966,921.80/x
  3. Step 3: Cross multiply
    966,921.80x = 1,355,090.20 × 966,921.80
  4. Step 4: Simplify right side
    966,921.80x = 1,310,266,255,346.36
  5. Step 5: Solve for x
    x = 1,310,266,255,346.36/966,921.80
  6. Step 6: Final answer
    x = 1,355,090.20

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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.