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Finding the Fourth Proportional to 908,643.15, 1,362,964.73 and 908,643.15

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Solution

The fourth proportional to 908,643.15, 1,362,964.73 and 908,643.15 is: 1,362,964.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,643.15 : 1,362,964.73 = 908,643.15 : x
  2. Step 2: Convert to fraction form
    908,643.15/1,362,964.73 = 908,643.15/x
  3. Step 3: Cross multiply
    908,643.15x = 1,362,964.73 × 908,643.15
  4. Step 4: Simplify right side
    908,643.15x = 1,238,448,561,062.88
  5. Step 5: Solve for x
    x = 1,238,448,561,062.88/908,643.15
  6. Step 6: Final answer
    x = 1,362,964.73

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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.