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Finding the Fourth Proportional to 291,855.60, 437,783.40 and 186,879.60

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Solution

The fourth proportional to 291,855.60, 437,783.40 and 186,879.60 is: 280,319.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,855.60 : 437,783.40 = 186,879.60 : x
  2. Step 2: Convert to fraction form
    291,855.60/437,783.40 = 186,879.60/x
  3. Step 3: Cross multiply
    291,855.60x = 437,783.40 × 186,879.60
  4. Step 4: Simplify right side
    291,855.60x = 81,812,786,678.64
  5. Step 5: Solve for x
    x = 81,812,786,678.64/291,855.60
  6. Step 6: Final answer
    x = 280,319.40

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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.