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Finding the Fourth Proportional to 191,419.72, 287,129.58 and 51,174.70

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Solution

The fourth proportional to 191,419.72, 287,129.58 and 51,174.70 is: 76,762.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,419.72 : 287,129.58 = 51,174.70 : x
  2. Step 2: Convert to fraction form
    191,419.72/287,129.58 = 51,174.70/x
  3. Step 3: Cross multiply
    191,419.72x = 287,129.58 × 51,174.70
  4. Step 4: Simplify right side
    191,419.72x = 14,693,770,117.63
  5. Step 5: Solve for x
    x = 14,693,770,117.63/191,419.72
  6. Step 6: Final answer
    x = 76,762.05

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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.