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Finding the Fourth Proportional to 79,285.40, 118,713.57 and 58,064.66

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Solution

The fourth proportional to 79,285.40, 118,713.57 and 58,064.66 is: 86,939.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,285.40 : 118,713.57 = 58,064.66 : x
  2. Step 2: Convert to fraction form
    79,285.40/118,713.57 = 58,064.66/x
  3. Step 3: Cross multiply
    79,285.40x = 118,713.57 × 58,064.66
  4. Step 4: Simplify right side
    79,285.40x = 6,893,063,381.07
  5. Step 5: Solve for x
    x = 6,893,063,381.07/79,285.40
  6. Step 6: Final answer
    x = 86,939.88

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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.