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Finding the Fourth Proportional to 323,792.64, 485,693.40 and 124,123.20

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Solution

The fourth proportional to 323,792.64, 485,693.40 and 124,123.20 is: 186,186.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,792.64 : 485,693.40 = 124,123.20 : x
  2. Step 2: Convert to fraction form
    323,792.64/485,693.40 = 124,123.20/x
  3. Step 3: Cross multiply
    323,792.64x = 485,693.40 × 124,123.20
  4. Step 4: Simplify right side
    323,792.64x = 60,285,819,026.88
  5. Step 5: Solve for x
    x = 60,285,819,026.88/323,792.64
  6. Step 6: Final answer
    x = 186,186.50

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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.