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Finding the Fourth Proportional to 124,187.72, 186,134.90 and 53,089.56

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Solution

The fourth proportional to 124,187.72, 186,134.90 and 53,089.56 is: 79,571.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,187.72 : 186,134.90 = 53,089.56 : x
  2. Step 2: Convert to fraction form
    124,187.72/186,134.90 = 53,089.56/x
  3. Step 3: Cross multiply
    124,187.72x = 186,134.90 × 53,089.56
  4. Step 4: Simplify right side
    124,187.72x = 9,881,819,676.20
  5. Step 5: Solve for x
    x = 9,881,819,676.20/124,187.72
  6. Step 6: Final answer
    x = 79,571.64

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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.