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Finding the Fourth Proportional to 98,892.81, 136,472.74 and 53,570.79

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Solution

The fourth proportional to 98,892.81, 136,472.74 and 53,570.79 is: 73,928.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,892.81 : 136,472.74 = 53,570.79 : x
  2. Step 2: Convert to fraction form
    98,892.81/136,472.74 = 53,570.79/x
  3. Step 3: Cross multiply
    98,892.81x = 136,472.74 × 53,570.79
  4. Step 4: Simplify right side
    98,892.81x = 7,310,952,361.34
  5. Step 5: Solve for x
    x = 7,310,952,361.34/98,892.81
  6. Step 6: Final answer
    x = 73,928.05

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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.