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Finding the Fourth Proportional to 53,132.40, 79,698.60 and 36,543.60

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Solution

The fourth proportional to 53,132.40, 79,698.60 and 36,543.60 is: 54,815.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,132.40 : 79,698.60 = 36,543.60 : x
  2. Step 2: Convert to fraction form
    53,132.40/79,698.60 = 36,543.60/x
  3. Step 3: Cross multiply
    53,132.40x = 79,698.60 × 36,543.60
  4. Step 4: Simplify right side
    53,132.40x = 2,912,473,758.96
  5. Step 5: Solve for x
    x = 2,912,473,758.96/53,132.40
  6. Step 6: Final answer
    x = 54,815.40

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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.