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Finding the Fourth Proportional to 1,983,545.11, 2,973,573.53 and 786,308.41

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Solution

The fourth proportional to 1,983,545.11, 2,973,573.53 and 786,308.41 is: 1,178,771.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983,545.11 : 2,973,573.53 = 786,308.41 : x
  2. Step 2: Convert to fraction form
    1,983,545.11/2,973,573.53 = 786,308.41/x
  3. Step 3: Cross multiply
    1,983,545.11x = 2,973,573.53 × 786,308.41
  4. Step 4: Simplify right side
    1,983,545.11x = 2,338,145,855,592.98
  5. Step 5: Solve for x
    x = 2,338,145,855,592.98/1,983,545.11
  6. Step 6: Final answer
    x = 1,178,771.21

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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.