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Finding the Fourth Proportional to 1,338,525.93, 2,007,642 and 391,905.93

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Solution

The fourth proportional to 1,338,525.93, 2,007,642 and 391,905.93 is: 587,815.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,525.93 : 2,007,642 = 391,905.93 : x
  2. Step 2: Convert to fraction form
    1,338,525.93/2,007,642 = 391,905.93/x
  3. Step 3: Cross multiply
    1,338,525.93x = 2,007,642 × 391,905.93
  4. Step 4: Simplify right side
    1,338,525.93x = 786,806,805,117.06
  5. Step 5: Solve for x
    x = 786,806,805,117.06/1,338,525.93
  6. Step 6: Final answer
    x = 587,815.89

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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.