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Finding the Fourth Proportional to 405,945.10, 608,917.65 and 156,627.10

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Solution

The fourth proportional to 405,945.10, 608,917.65 and 156,627.10 is: 234,940.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,945.10 : 608,917.65 = 156,627.10 : x
  2. Step 2: Convert to fraction form
    405,945.10/608,917.65 = 156,627.10/x
  3. Step 3: Cross multiply
    405,945.10x = 608,917.65 × 156,627.10
  4. Step 4: Simplify right side
    405,945.10x = 95,373,005,658.32
  5. Step 5: Solve for x
    x = 95,373,005,658.32/405,945.10
  6. Step 6: Final answer
    x = 234,940.65

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1.5x scale

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.