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Finding the Fourth Proportional to 146,421.54, 219,686.11 and 104,630.54

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Solution

The fourth proportional to 146,421.54, 219,686.11 and 104,630.54 is: 156,984.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,421.54 : 219,686.11 = 104,630.54 : x
  2. Step 2: Convert to fraction form
    146,421.54/219,686.11 = 104,630.54/x
  3. Step 3: Cross multiply
    146,421.54x = 219,686.11 × 104,630.54
  4. Step 4: Simplify right side
    146,421.54x = 22,985,874,959.79
  5. Step 5: Solve for x
    x = 22,985,874,959.79/146,421.54
  6. Step 6: Final answer
    x = 156,984.25

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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.