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Finding the Fourth Proportional to 52,551.80, 72,521.74 and 28,678.97

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Solution

The fourth proportional to 52,551.80, 72,521.74 and 28,678.97 is: 39,577.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,551.80 : 72,521.74 = 28,678.97 : x
  2. Step 2: Convert to fraction form
    52,551.80/72,521.74 = 28,678.97/x
  3. Step 3: Cross multiply
    52,551.80x = 72,521.74 × 28,678.97
  4. Step 4: Simplify right side
    52,551.80x = 2,079,848,805.81
  5. Step 5: Solve for x
    x = 2,079,848,805.81/52,551.80
  6. Step 6: Final answer
    x = 39,577.12

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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.