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Finding the Fourth Proportional to 98,873.19, 136,444.50 and 53,550.45

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Solution

The fourth proportional to 98,873.19, 136,444.50 and 53,550.45 is: 73,899.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,873.19 : 136,444.50 = 53,550.45 : x
  2. Step 2: Convert to fraction form
    98,873.19/136,444.50 = 53,550.45/x
  3. Step 3: Cross multiply
    98,873.19x = 136,444.50 × 53,550.45
  4. Step 4: Simplify right side
    98,873.19x = 7,306,664,375.03
  5. Step 5: Solve for x
    x = 7,306,664,375.03/98,873.19
  6. Step 6: Final answer
    x = 73,899.35

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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.