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Finding the Fourth Proportional to 58,206.80, 87,115.80 and 51,208.40

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Solution

The fourth proportional to 58,206.80, 87,115.80 and 51,208.40 is: 76,641.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,206.80 : 87,115.80 = 51,208.40 : x
  2. Step 2: Convert to fraction form
    58,206.80/87,115.80 = 51,208.40/x
  3. Step 3: Cross multiply
    58,206.80x = 87,115.80 × 51,208.40
  4. Step 4: Simplify right side
    58,206.80x = 4,461,060,732.72
  5. Step 5: Solve for x
    x = 4,461,060,732.72/58,206.80
  6. Step 6: Final answer
    x = 76,641.57

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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.