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Finding the Fourth Proportional to 58,643.30, 87,989.86 and 29,061.70

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Solution

The fourth proportional to 58,643.30, 87,989.86 and 29,061.70 is: 43,604.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,643.30 : 87,989.86 = 29,061.70 : x
  2. Step 2: Convert to fraction form
    58,643.30/87,989.86 = 29,061.70/x
  3. Step 3: Cross multiply
    58,643.30x = 87,989.86 × 29,061.70
  4. Step 4: Simplify right side
    58,643.30x = 2,557,134,914.36
  5. Step 5: Solve for x
    x = 2,557,134,914.36/58,643.30
  6. Step 6: Final answer
    x = 43,604.89

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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.