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Finding the Fourth Proportional to 1,663,721.40, 2,494,597.95 and 866,559.90

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Solution

The fourth proportional to 1,663,721.40, 2,494,597.95 and 866,559.90 is: 1,299,327.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663,721.40 : 2,494,597.95 = 866,559.90 : x
  2. Step 2: Convert to fraction form
    1,663,721.40/2,494,597.95 = 866,559.90/x
  3. Step 3: Cross multiply
    1,663,721.40x = 2,494,597.95 × 866,559.90
  4. Step 4: Simplify right side
    1,663,721.40x = 2,161,718,550,092.21
  5. Step 5: Solve for x
    x = 2,161,718,550,092.21/1,663,721.40
  6. Step 6: Final answer
    x = 1,299,327.25

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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.