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Finding the Fourth Proportional to 52,803.16, 79,007.88 and 52,212.64

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Solution

The fourth proportional to 52,803.16, 79,007.88 and 52,212.64 is: 78,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,803.16 : 79,007.88 = 52,212.64 : x
  2. Step 2: Convert to fraction form
    52,803.16/79,007.88 = 52,212.64/x
  3. Step 3: Cross multiply
    52,803.16x = 79,007.88 × 52,212.64
  4. Step 4: Simplify right side
    52,803.16x = 4,125,209,995.60
  5. Step 5: Solve for x
    x = 4,125,209,995.60/52,803.16
  6. Step 6: Final answer
    x = 78,124.30

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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.