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Finding the Fourth Proportional to 191,636.64, 287,719.92 and 132,325.92

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Solution

The fourth proportional to 191,636.64, 287,719.92 and 132,325.92 is: 198,671.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,636.64 : 287,719.92 = 132,325.92 : x
  2. Step 2: Convert to fraction form
    191,636.64/287,719.92 = 132,325.92/x
  3. Step 3: Cross multiply
    191,636.64x = 287,719.92 × 132,325.92
  4. Step 4: Simplify right side
    191,636.64x = 38,072,803,116.33
  5. Step 5: Solve for x
    x = 38,072,803,116.33/191,636.64
  6. Step 6: Final answer
    x = 198,671.84

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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.