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Finding the Fourth Proportional to 99,303.92, 137,040.24 and 53,981.96

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Solution

The fourth proportional to 99,303.92, 137,040.24 and 53,981.96 is: 74,495.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,303.92 : 137,040.24 = 53,981.96 : x
  2. Step 2: Convert to fraction form
    99,303.92/137,040.24 = 53,981.96/x
  3. Step 3: Cross multiply
    99,303.92x = 137,040.24 × 53,981.96
  4. Step 4: Simplify right side
    99,303.92x = 7,397,700,754.07
  5. Step 5: Solve for x
    x = 7,397,700,754.07/99,303.92
  6. Step 6: Final answer
    x = 74,495.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.