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Finding the Fourth Proportional to 133,216.72, 199,865.04 and 56,316.16

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Solution

The fourth proportional to 133,216.72, 199,865.04 and 56,316.16 is: 84,491.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,216.72 : 199,865.04 = 56,316.16 : x
  2. Step 2: Convert to fraction form
    133,216.72/199,865.04 = 56,316.16/x
  3. Step 3: Cross multiply
    133,216.72x = 199,865.04 × 56,316.16
  4. Step 4: Simplify right side
    133,216.72x = 11,255,631,571.05
  5. Step 5: Solve for x
    x = 11,255,631,571.05/133,216.72
  6. Step 6: Final answer
    x = 84,491.13

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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.