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Finding the Fourth Proportional to 129,806.86, 179,214.56 and 99,534.02

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Solution

The fourth proportional to 129,806.86, 179,214.56 and 99,534.02 is: 137,419.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,806.86 : 179,214.56 = 99,534.02 : x
  2. Step 2: Convert to fraction form
    129,806.86/179,214.56 = 99,534.02/x
  3. Step 3: Cross multiply
    129,806.86x = 179,214.56 × 99,534.02
  4. Step 4: Simplify right side
    129,806.86x = 17,837,945,599.33
  5. Step 5: Solve for x
    x = 17,837,945,599.33/129,806.86
  6. Step 6: Final answer
    x = 137,419.13

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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.