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Finding the Fourth Proportional to 98,894.32, 136,473.36 and 53,571.28

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Solution

The fourth proportional to 98,894.32, 136,473.36 and 53,571.28 is: 73,927.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,894.32 : 136,473.36 = 53,571.28 : x
  2. Step 2: Convert to fraction form
    98,894.32/136,473.36 = 53,571.28/x
  3. Step 3: Cross multiply
    98,894.32x = 136,473.36 × 53,571.28
  4. Step 4: Simplify right side
    98,894.32x = 7,311,052,581.10
  5. Step 5: Solve for x
    x = 7,311,052,581.10/98,894.32
  6. Step 6: Final answer
    x = 73,927.93

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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.