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Finding the Fourth Proportional to 98,901.81, 136,486.96 and 58,609.04

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Solution

The fourth proportional to 98,901.81, 136,486.96 and 58,609.04 is: 80,881.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,901.81 : 136,486.96 = 58,609.04 : x
  2. Step 2: Convert to fraction form
    98,901.81/136,486.96 = 58,609.04/x
  3. Step 3: Cross multiply
    98,901.81x = 136,486.96 × 58,609.04
  4. Step 4: Simplify right side
    98,901.81x = 7,999,368,869.16
  5. Step 5: Solve for x
    x = 7,999,368,869.16/98,901.81
  6. Step 6: Final answer
    x = 80,881.93

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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.