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Finding the Fourth Proportional to 806,808.40, 1,210,601.40 and 569,640.40

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Solution

The fourth proportional to 806,808.40, 1,210,601.40 and 569,640.40 is: 854,735.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,808.40 : 1,210,601.40 = 569,640.40 : x
  2. Step 2: Convert to fraction form
    806,808.40/1,210,601.40 = 569,640.40/x
  3. Step 3: Cross multiply
    806,808.40x = 1,210,601.40 × 569,640.40
  4. Step 4: Simplify right side
    806,808.40x = 689,607,465,736.56
  5. Step 5: Solve for x
    x = 689,607,465,736.56/806,808.40
  6. Step 6: Final answer
    x = 854,735.11

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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.