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Finding the Fourth Proportional to 190,404.65, 285,666.66 and 114,585.90

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Solution

The fourth proportional to 190,404.65, 285,666.66 and 114,585.90 is: 171,914.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,404.65 : 285,666.66 = 114,585.90 : x
  2. Step 2: Convert to fraction form
    190,404.65/285,666.66 = 114,585.90/x
  3. Step 3: Cross multiply
    190,404.65x = 285,666.66 × 114,585.90
  4. Step 4: Simplify right side
    190,404.65x = 32,733,371,336.09
  5. Step 5: Solve for x
    x = 32,733,371,336.09/190,404.65
  6. Step 6: Final answer
    x = 171,914.77

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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.