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Finding the Fourth Proportional to 328,671.25, 493,080.72 and 104,045.15

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Solution

The fourth proportional to 328,671.25, 493,080.72 and 104,045.15 is: 156,091.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,671.25 : 493,080.72 = 104,045.15 : x
  2. Step 2: Convert to fraction form
    328,671.25/493,080.72 = 104,045.15/x
  3. Step 3: Cross multiply
    328,671.25x = 493,080.72 × 104,045.15
  4. Step 4: Simplify right side
    328,671.25x = 51,302,656,954.28
  5. Step 5: Solve for x
    x = 51,302,656,954.28/328,671.25
  6. Step 6: Final answer
    x = 156,091.10

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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.