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Finding the Fourth Proportional to 52,740.80, 79,111.20 and 32,004.80

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Solution

The fourth proportional to 52,740.80, 79,111.20 and 32,004.80 is: 48,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,740.80 : 79,111.20 = 32,004.80 : x
  2. Step 2: Convert to fraction form
    52,740.80/79,111.20 = 32,004.80/x
  3. Step 3: Cross multiply
    52,740.80x = 79,111.20 × 32,004.80
  4. Step 4: Simplify right side
    52,740.80x = 2,531,938,133.76
  5. Step 5: Solve for x
    x = 2,531,938,133.76/52,740.80
  6. Step 6: Final answer
    x = 48,007.20

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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.