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Finding the Fourth Proportional to 207,285.76, 310,938.36 and 67,055.32

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Solution

The fourth proportional to 207,285.76, 310,938.36 and 67,055.32 is: 100,586.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,285.76 : 310,938.36 = 67,055.32 : x
  2. Step 2: Convert to fraction form
    207,285.76/310,938.36 = 67,055.32/x
  3. Step 3: Cross multiply
    207,285.76x = 310,938.36 × 67,055.32
  4. Step 4: Simplify right side
    207,285.76x = 20,850,071,230.08
  5. Step 5: Solve for x
    x = 20,850,071,230.08/207,285.76
  6. Step 6: Final answer
    x = 100,586.12

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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.