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Finding the Fourth Proportional to 114,916.70, 172,055.10 and 58,635.20

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Solution

The fourth proportional to 114,916.70, 172,055.10 and 58,635.20 is: 87,789.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,916.70 : 172,055.10 = 58,635.20 : x
  2. Step 2: Convert to fraction form
    114,916.70/172,055.10 = 58,635.20/x
  3. Step 3: Cross multiply
    114,916.70x = 172,055.10 × 58,635.20
  4. Step 4: Simplify right side
    114,916.70x = 10,088,485,199.52
  5. Step 5: Solve for x
    x = 10,088,485,199.52/114,916.70
  6. Step 6: Final answer
    x = 87,789.55

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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.