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Finding the Fourth Proportional to 191,858.55, 287,623.71 and 73,614.75

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Solution

The fourth proportional to 191,858.55, 287,623.71 and 73,614.75 is: 110,359.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,858.55 : 287,623.71 = 73,614.75 : x
  2. Step 2: Convert to fraction form
    191,858.55/287,623.71 = 73,614.75/x
  3. Step 3: Cross multiply
    191,858.55x = 287,623.71 × 73,614.75
  4. Step 4: Simplify right side
    191,858.55x = 21,173,347,505.72
  5. Step 5: Solve for x
    x = 21,173,347,505.72/191,858.55
  6. Step 6: Final answer
    x = 110,359.16

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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.