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Finding the Fourth Proportional to 136,862.51, 205,302.81 and 65,800.13

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Solution

The fourth proportional to 136,862.51, 205,302.81 and 65,800.13 is: 98,704.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,862.51 : 205,302.81 = 65,800.13 : x
  2. Step 2: Convert to fraction form
    136,862.51/205,302.81 = 65,800.13/x
  3. Step 3: Cross multiply
    136,862.51x = 205,302.81 × 65,800.13
  4. Step 4: Simplify right side
    136,862.51x = 13,508,951,587.37
  5. Step 5: Solve for x
    x = 13,508,951,587.37/136,862.51
  6. Step 6: Final answer
    x = 98,704.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.