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Finding the Fourth Proportional to 99,223.16, 136,928.39 and 53,901.32

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Solution

The fourth proportional to 99,223.16, 136,928.39 and 53,901.32 is: 74,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,223.16 : 136,928.39 = 53,901.32 : x
  2. Step 2: Convert to fraction form
    99,223.16/136,928.39 = 53,901.32/x
  3. Step 3: Cross multiply
    99,223.16x = 136,928.39 × 53,901.32
  4. Step 4: Simplify right side
    99,223.16x = 7,380,620,012.33
  5. Step 5: Solve for x
    x = 7,380,620,012.33/99,223.16
  6. Step 6: Final answer
    x = 74,384.05

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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.