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Finding the Fourth Proportional to 1,936,943.88, 2,905,430.40 and 674,769.48

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Solution

The fourth proportional to 1,936,943.88, 2,905,430.40 and 674,769.48 is: 1,012,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936,943.88 : 2,905,430.40 = 674,769.48 : x
  2. Step 2: Convert to fraction form
    1,936,943.88/2,905,430.40 = 674,769.48/x
  3. Step 3: Cross multiply
    1,936,943.88x = 2,905,430.40 × 674,769.48
  4. Step 4: Simplify right side
    1,936,943.88x = 1,960,495,760,184.19
  5. Step 5: Solve for x
    x = 1,960,495,760,184.19/1,936,943.88
  6. Step 6: Final answer
    x = 1,012,159.30

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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.