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Finding the Fourth Proportional to 70,364.72, 105,565.08 and 51,865.04

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Solution

The fourth proportional to 70,364.72, 105,565.08 and 51,865.04 is: 77,810.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,364.72 : 105,565.08 = 51,865.04 : x
  2. Step 2: Convert to fraction form
    70,364.72/105,565.08 = 51,865.04/x
  3. Step 3: Cross multiply
    70,364.72x = 105,565.08 × 51,865.04
  4. Step 4: Simplify right side
    70,364.72x = 5,475,137,096.80
  5. Step 5: Solve for x
    x = 5,475,137,096.80/70,364.72
  6. Step 6: Final answer
    x = 77,810.83

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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.