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Finding the Fourth Proportional to 52,768.79, 72,821.05 and 28,570.01

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Solution

The fourth proportional to 52,768.79, 72,821.05 and 28,570.01 is: 39,426.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,768.79 : 72,821.05 = 28,570.01 : x
  2. Step 2: Convert to fraction form
    52,768.79/72,821.05 = 28,570.01/x
  3. Step 3: Cross multiply
    52,768.79x = 72,821.05 × 28,570.01
  4. Step 4: Simplify right side
    52,768.79x = 2,080,498,237.34
  5. Step 5: Solve for x
    x = 2,080,498,237.34/52,768.79
  6. Step 6: Final answer
    x = 39,426.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.