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Finding the Fourth Proportional to 1,189,891, 1,642,049.58 and 653,347

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Solution

The fourth proportional to 1,189,891, 1,642,049.58 and 653,347 is: 901,618.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,891 : 1,642,049.58 = 653,347 : x
  2. Step 2: Convert to fraction form
    1,189,891/1,642,049.58 = 653,347/x
  3. Step 3: Cross multiply
    1,189,891x = 1,642,049.58 × 653,347
  4. Step 4: Simplify right side
    1,189,891x = 1,072,828,166,944.26
  5. Step 5: Solve for x
    x = 1,072,828,166,944.26/1,189,891
  6. Step 6: Final answer
    x = 901,618.86

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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.