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Finding the Fourth Proportional to 328,669.50, 493,078.09 and 104,043.40

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Solution

The fourth proportional to 328,669.50, 493,078.09 and 104,043.40 is: 156,088.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,669.50 : 493,078.09 = 104,043.40 : x
  2. Step 2: Convert to fraction form
    328,669.50/493,078.09 = 104,043.40/x
  3. Step 3: Cross multiply
    328,669.50x = 493,078.09 × 104,043.40
  4. Step 4: Simplify right side
    328,669.50x = 51,301,520,689.00
  5. Step 5: Solve for x
    x = 51,301,520,689.00/328,669.50
  6. Step 6: Final answer
    x = 156,088.48

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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.