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Finding the Fourth Proportional to 455,695.67, 683,554.44 and 140,155.31

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Solution

The fourth proportional to 455,695.67, 683,554.44 and 140,155.31 is: 210,236.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,695.67 : 683,554.44 = 140,155.31 : x
  2. Step 2: Convert to fraction form
    455,695.67/683,554.44 = 140,155.31/x
  3. Step 3: Cross multiply
    455,695.67x = 683,554.44 × 140,155.31
  4. Step 4: Simplify right side
    455,695.67x = 95,803,786,674.54
  5. Step 5: Solve for x
    x = 95,803,786,674.54/455,695.67
  6. Step 6: Final answer
    x = 210,236.33

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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.