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Finding the Fourth Proportional to 129,798.86, 179,203.52 and 99,526.03

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Solution

The fourth proportional to 129,798.86, 179,203.52 and 99,526.03 is: 137,408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,798.86 : 179,203.52 = 99,526.03 : x
  2. Step 2: Convert to fraction form
    129,798.86/179,203.52 = 99,526.03/x
  3. Step 3: Cross multiply
    129,798.86x = 179,203.52 × 99,526.03
  4. Step 4: Simplify right side
    129,798.86x = 17,835,414,907.63
  5. Step 5: Solve for x
    x = 17,835,414,907.63/129,798.86
  6. Step 6: Final answer
    x = 137,408.10

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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.