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Finding the Fourth Proportional to 1,209,993.12, 1,669,888.10 and 693,795.04

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Solution

The fourth proportional to 1,209,993.12, 1,669,888.10 and 693,795.04 is: 957,493.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,993.12 : 1,669,888.10 = 693,795.04 : x
  2. Step 2: Convert to fraction form
    1,209,993.12/1,669,888.10 = 693,795.04/x
  3. Step 3: Cross multiply
    1,209,993.12x = 1,669,888.10 × 693,795.04
  4. Step 4: Simplify right side
    1,209,993.12x = 1,158,560,080,158.21
  5. Step 5: Solve for x
    x = 1,158,560,080,158.21/1,209,993.12
  6. Step 6: Final answer
    x = 957,493.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.