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Finding the Fourth Proportional to 99,312.92, 137,054.48 and 53,993.96

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Solution

The fourth proportional to 99,312.92, 137,054.48 and 53,993.96 is: 74,513.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,312.92 : 137,054.48 = 53,993.96 : x
  2. Step 2: Convert to fraction form
    99,312.92/137,054.48 = 53,993.96/x
  3. Step 3: Cross multiply
    99,312.92x = 137,054.48 × 53,993.96
  4. Step 4: Simplify right side
    99,312.92x = 7,400,114,110.94
  5. Step 5: Solve for x
    x = 7,400,114,110.94/99,312.92
  6. Step 6: Final answer
    x = 74,513.11

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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.