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Finding the Fourth Proportional to 58,006.80, 86,815.80 and 51,008.40

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Solution

The fourth proportional to 58,006.80, 86,815.80 and 51,008.40 is: 76,341.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,006.80 : 86,815.80 = 51,008.40 : x
  2. Step 2: Convert to fraction form
    58,006.80/86,815.80 = 51,008.40/x
  3. Step 3: Cross multiply
    58,006.80x = 86,815.80 × 51,008.40
  4. Step 4: Simplify right side
    58,006.80x = 4,428,335,052.72
  5. Step 5: Solve for x
    x = 4,428,335,052.72/58,006.80
  6. Step 6: Final answer
    x = 76,341.65

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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.