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Finding the Fourth Proportional to 1,984,711.74, 2,974,309.56 and 1,036,190.40

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Solution

The fourth proportional to 1,984,711.74, 2,974,309.56 and 1,036,190.40 is: 1,552,845.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984,711.74 : 2,974,309.56 = 1,036,190.40 : x
  2. Step 2: Convert to fraction form
    1,984,711.74/2,974,309.56 = 1,036,190.40/x
  3. Step 3: Cross multiply
    1,984,711.74x = 2,974,309.56 × 1,036,190.40
  4. Step 4: Simplify right side
    1,984,711.74x = 3,081,951,012,700.22
  5. Step 5: Solve for x
    x = 3,081,951,012,700.22/1,984,711.74
  6. Step 6: Final answer
    x = 1,552,845.66

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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.