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Finding the Fourth Proportional to 35,432.80, 53,149.20 and 25,640.80

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Solution

The fourth proportional to 35,432.80, 53,149.20 and 25,640.80 is: 38,461.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,432.80 : 53,149.20 = 25,640.80 : x
  2. Step 2: Convert to fraction form
    35,432.80/53,149.20 = 25,640.80/x
  3. Step 3: Cross multiply
    35,432.80x = 53,149.20 × 25,640.80
  4. Step 4: Simplify right side
    35,432.80x = 1,362,788,007.36
  5. Step 5: Solve for x
    x = 1,362,788,007.36/35,432.80
  6. Step 6: Final answer
    x = 38,461.20

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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.