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Finding the Fourth Proportional to 1,933,985.49, 2,900,978.25 and 671,814.33

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Solution

The fourth proportional to 1,933,985.49, 2,900,978.25 and 671,814.33 is: 1,007,721.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,933,985.49 : 2,900,978.25 = 671,814.33 : x
  2. Step 2: Convert to fraction form
    1,933,985.49/2,900,978.25 = 671,814.33/x
  3. Step 3: Cross multiply
    1,933,985.49x = 2,900,978.25 × 671,814.33
  4. Step 4: Simplify right side
    1,933,985.49x = 1,948,918,759,368.32
  5. Step 5: Solve for x
    x = 1,948,918,759,368.32/1,933,985.49
  6. Step 6: Final answer
    x = 1,007,721.50

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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.