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Finding the Fourth Proportional to 207,320.16, 310,980.24 and 67,092.96

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Solution

The fourth proportional to 207,320.16, 310,980.24 and 67,092.96 is: 100,639.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,320.16 : 310,980.24 = 67,092.96 : x
  2. Step 2: Convert to fraction form
    207,320.16/310,980.24 = 67,092.96/x
  3. Step 3: Cross multiply
    207,320.16x = 310,980.24 × 67,092.96
  4. Step 4: Simplify right side
    207,320.16x = 20,864,584,803.11
  5. Step 5: Solve for x
    x = 20,864,584,803.11/207,320.16
  6. Step 6: Final answer
    x = 100,639.44

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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.