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Finding the Fourth Proportional to 52,853.68, 72,937.52 and 28,980.52

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Solution

The fourth proportional to 52,853.68, 72,937.52 and 28,980.52 is: 39,992.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,853.68 : 72,937.52 = 28,980.52 : x
  2. Step 2: Convert to fraction form
    52,853.68/72,937.52 = 28,980.52/x
  3. Step 3: Cross multiply
    52,853.68x = 72,937.52 × 28,980.52
  4. Step 4: Simplify right side
    52,853.68x = 2,113,767,257.11
  5. Step 5: Solve for x
    x = 2,113,767,257.11/52,853.68
  6. Step 6: Final answer
    x = 39,992.81

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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.