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Finding the Fourth Proportional to 1,264,897.47, 1,744,375.53 and 1,007,629.73

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Solution

The fourth proportional to 1,264,897.47, 1,744,375.53 and 1,007,629.73 is: 1,389,586.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264,897.47 : 1,744,375.53 = 1,007,629.73 : x
  2. Step 2: Convert to fraction form
    1,264,897.47/1,744,375.53 = 1,007,629.73/x
  3. Step 3: Cross multiply
    1,264,897.47x = 1,744,375.53 × 1,007,629.73
  4. Step 4: Simplify right side
    1,264,897.47x = 1,757,684,644,312.51
  5. Step 5: Solve for x
    x = 1,757,684,644,312.51/1,264,897.47
  6. Step 6: Final answer
    x = 1,389,586.66

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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.