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Finding the Fourth Proportional to 191,352.70, 264,056.88 and 105,319.85

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Solution

The fourth proportional to 191,352.70, 264,056.88 and 105,319.85 is: 145,335.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,352.70 : 264,056.88 = 105,319.85 : x
  2. Step 2: Convert to fraction form
    191,352.70/264,056.88 = 105,319.85/x
  3. Step 3: Cross multiply
    191,352.70x = 264,056.88 × 105,319.85
  4. Step 4: Simplify right side
    191,352.70x = 27,810,430,596.23
  5. Step 5: Solve for x
    x = 27,810,430,596.23/191,352.70
  6. Step 6: Final answer
    x = 145,335.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.