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Finding the Fourth Proportional to 191,804.35, 287,706.53 and 121,993.15

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Solution

The fourth proportional to 191,804.35, 287,706.53 and 121,993.15 is: 182,989.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,804.35 : 287,706.53 = 121,993.15 : x
  2. Step 2: Convert to fraction form
    191,804.35/287,706.53 = 121,993.15/x
  3. Step 3: Cross multiply
    191,804.35x = 287,706.53 × 121,993.15
  4. Step 4: Simplify right side
    191,804.35x = 35,098,225,260.30
  5. Step 5: Solve for x
    x = 35,098,225,260.30/191,804.35
  6. Step 6: Final answer
    x = 182,989.73

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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.