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Finding the Fourth Proportional to 52,807.96, 79,378.01 and 45,874.31

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Solution

The fourth proportional to 52,807.96, 79,378.01 and 45,874.31 is: 68,955.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,807.96 : 79,378.01 = 45,874.31 : x
  2. Step 2: Convert to fraction form
    52,807.96/79,378.01 = 45,874.31/x
  3. Step 3: Cross multiply
    52,807.96x = 79,378.01 × 45,874.31
  4. Step 4: Simplify right side
    52,807.96x = 3,641,411,437.92
  5. Step 5: Solve for x
    x = 3,641,411,437.92/52,807.96
  6. Step 6: Final answer
    x = 68,955.74

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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.