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Finding the Fourth Proportional to 219,712.56, 329,552.10 and 69,957.60

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Solution

The fourth proportional to 219,712.56, 329,552.10 and 69,957.60 is: 104,931.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,712.56 : 329,552.10 = 69,957.60 : x
  2. Step 2: Convert to fraction form
    219,712.56/329,552.10 = 69,957.60/x
  3. Step 3: Cross multiply
    219,712.56x = 329,552.10 × 69,957.60
  4. Step 4: Simplify right side
    219,712.56x = 23,054,673,990.96
  5. Step 5: Solve for x
    x = 23,054,673,990.96/219,712.56
  6. Step 6: Final answer
    x = 104,931.07

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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.