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Finding the Fourth Proportional to 569,765.73, 786,518.81 and 355,011.90

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Solution

The fourth proportional to 569,765.73, 786,518.81 and 355,011.90 is: 490,067.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,765.73 : 786,518.81 = 355,011.90 : x
  2. Step 2: Convert to fraction form
    569,765.73/786,518.81 = 355,011.90/x
  3. Step 3: Cross multiply
    569,765.73x = 786,518.81 × 355,011.90
  4. Step 4: Simplify right side
    569,765.73x = 279,223,535,348.78
  5. Step 5: Solve for x
    x = 279,223,535,348.78/569,765.73
  6. Step 6: Final answer
    x = 490,067.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.