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Finding the Fourth Proportional to 918,175.10, 1,286,494.90 and 918,175.10

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Solution

The fourth proportional to 918,175.10, 1,286,494.90 and 918,175.10 is: 1,286,494.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,175.10 : 1,286,494.90 = 918,175.10 : x
  2. Step 2: Convert to fraction form
    918,175.10/1,286,494.90 = 918,175.10/x
  3. Step 3: Cross multiply
    918,175.10x = 1,286,494.90 × 918,175.10
  4. Step 4: Simplify right side
    918,175.10x = 1,181,227,583,456.99
  5. Step 5: Solve for x
    x = 1,181,227,583,456.99/918,175.10
  6. Step 6: Final answer
    x = 1,286,494.90

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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.