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Finding the Fourth Proportional to 52,807.16, 79,013.88 and 52,216.64

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Solution

The fourth proportional to 52,807.16, 79,013.88 and 52,216.64 is: 78,130.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,807.16 : 79,013.88 = 52,216.64 : x
  2. Step 2: Convert to fraction form
    52,807.16/79,013.88 = 52,216.64/x
  3. Step 3: Cross multiply
    52,807.16x = 79,013.88 × 52,216.64
  4. Step 4: Simplify right side
    52,807.16x = 4,125,839,326.96
  5. Step 5: Solve for x
    x = 4,125,839,326.96/52,807.16
  6. Step 6: Final answer
    x = 78,130.30

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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.