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Finding the Fourth Proportional to 43,176, 59,608.80 and 28,297.92

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Solution

The fourth proportional to 43,176, 59,608.80 and 28,297.92 is: 39,068.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,176 : 59,608.80 = 28,297.92 : x
  2. Step 2: Convert to fraction form
    43,176/59,608.80 = 28,297.92/x
  3. Step 3: Cross multiply
    43,176x = 59,608.80 × 28,297.92
  4. Step 4: Simplify right side
    43,176x = 1,686,805,053.70
  5. Step 5: Solve for x
    x = 1,686,805,053.70/43,176
  6. Step 6: Final answer
    x = 39,068.12

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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.