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Finding the Fourth Proportional to 79,908.27, 119,748.16 and 58,681.81

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Solution

The fourth proportional to 79,908.27, 119,748.16 and 58,681.81 is: 87,938.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,908.27 : 119,748.16 = 58,681.81 : x
  2. Step 2: Convert to fraction form
    79,908.27/119,748.16 = 58,681.81/x
  3. Step 3: Cross multiply
    79,908.27x = 119,748.16 × 58,681.81
  4. Step 4: Simplify right side
    79,908.27x = 7,027,038,772.97
  5. Step 5: Solve for x
    x = 7,027,038,772.97/79,908.27
  6. Step 6: Final answer
    x = 87,938.82

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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.