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Finding the Fourth Proportional to 53,129.80, 79,657.70 and 23,531.59

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Solution

The fourth proportional to 53,129.80, 79,657.70 and 23,531.59 is: 35,280.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,129.80 : 79,657.70 = 23,531.59 : x
  2. Step 2: Convert to fraction form
    53,129.80/79,657.70 = 23,531.59/x
  3. Step 3: Cross multiply
    53,129.80x = 79,657.70 × 23,531.59
  4. Step 4: Simplify right side
    53,129.80x = 1,874,471,820.80
  5. Step 5: Solve for x
    x = 1,874,471,820.80/53,129.80
  6. Step 6: Final answer
    x = 35,280.99

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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.