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Finding the Fourth Proportional to 58,798.74, 81,145.08 and 36,138.72

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Solution

The fourth proportional to 58,798.74, 81,145.08 and 36,138.72 is: 49,873.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,798.74 : 81,145.08 = 36,138.72 : x
  2. Step 2: Convert to fraction form
    58,798.74/81,145.08 = 36,138.72/x
  3. Step 3: Cross multiply
    58,798.74x = 81,145.08 × 36,138.72
  4. Step 4: Simplify right side
    58,798.74x = 2,932,479,325.50
  5. Step 5: Solve for x
    x = 2,932,479,325.50/58,798.74
  6. Step 6: Final answer
    x = 49,873.17

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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.