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Finding the Fourth Proportional to 70,124.58, 105,217.70 and 36,836.91

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Solution

The fourth proportional to 70,124.58, 105,217.70 and 36,836.91 is: 55,271.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,124.58 : 105,217.70 = 36,836.91 : x
  2. Step 2: Convert to fraction form
    70,124.58/105,217.70 = 36,836.91/x
  3. Step 3: Cross multiply
    70,124.58x = 105,217.70 × 36,836.91
  4. Step 4: Simplify right side
    70,124.58x = 3,875,894,761.12
  5. Step 5: Solve for x
    x = 3,875,894,761.12/70,124.58
  6. Step 6: Final answer
    x = 55,271.56

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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.