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Finding the Fourth Proportional to 35,432.80, 53,168.40 and 15,714.40

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Solution

The fourth proportional to 35,432.80, 53,168.40 and 15,714.40 is: 23,580.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,432.80 : 53,168.40 = 15,714.40 : x
  2. Step 2: Convert to fraction form
    35,432.80/53,168.40 = 15,714.40/x
  3. Step 3: Cross multiply
    35,432.80x = 53,168.40 × 15,714.40
  4. Step 4: Simplify right side
    35,432.80x = 835,509,504.96
  5. Step 5: Solve for x
    x = 835,509,504.96/35,432.80
  6. Step 6: Final answer
    x = 23,580.12

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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.