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Finding the Fourth Proportional to 1,172,339.49, 1,617,828.49 and 635,795.49

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Solution

The fourth proportional to 1,172,339.49, 1,617,828.49 and 635,795.49 is: 877,397.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172,339.49 : 1,617,828.49 = 635,795.49 : x
  2. Step 2: Convert to fraction form
    1,172,339.49/1,617,828.49 = 635,795.49/x
  3. Step 3: Cross multiply
    1,172,339.49x = 1,617,828.49 × 635,795.49
  4. Step 4: Simplify right side
    1,172,339.49x = 1,028,608,057,535.51
  5. Step 5: Solve for x
    x = 1,028,608,057,535.51/1,172,339.49
  6. Step 6: Final answer
    x = 877,397.77

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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.