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Finding the Fourth Proportional to 58,937.12, 81,412.80 and 54,738.08

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Solution

The fourth proportional to 58,937.12, 81,412.80 and 54,738.08 is: 75,612.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,937.12 : 81,412.80 = 54,738.08 : x
  2. Step 2: Convert to fraction form
    58,937.12/81,412.80 = 54,738.08/x
  3. Step 3: Cross multiply
    58,937.12x = 81,412.80 × 54,738.08
  4. Step 4: Simplify right side
    58,937.12x = 4,456,380,359.42
  5. Step 5: Solve for x
    x = 4,456,380,359.42/58,937.12
  6. Step 6: Final answer
    x = 75,612.46

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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.