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Finding the Fourth Proportional to 52,915.65, 79,352.79 and 19,173.66

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Solution

The fourth proportional to 52,915.65, 79,352.79 and 19,173.66 is: 28,752.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,915.65 : 79,352.79 = 19,173.66 : x
  2. Step 2: Convert to fraction form
    52,915.65/79,352.79 = 19,173.66/x
  3. Step 3: Cross multiply
    52,915.65x = 79,352.79 × 19,173.66
  4. Step 4: Simplify right side
    52,915.65x = 1,521,483,415.51
  5. Step 5: Solve for x
    x = 1,521,483,415.51/52,915.65
  6. Step 6: Final answer
    x = 28,752.99

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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.