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Finding the Fourth Proportional to 52,966.70, 79,449.62 and 21,376.28

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Solution

The fourth proportional to 52,966.70, 79,449.62 and 21,376.28 is: 32,064.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,966.70 : 79,449.62 = 21,376.28 : x
  2. Step 2: Convert to fraction form
    52,966.70/79,449.62 = 21,376.28/x
  3. Step 3: Cross multiply
    52,966.70x = 79,449.62 × 21,376.28
  4. Step 4: Simplify right side
    52,966.70x = 1,698,337,206.33
  5. Step 5: Solve for x
    x = 1,698,337,206.33/52,966.70
  6. Step 6: Final answer
    x = 32,064.24

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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.