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Finding the Fourth Proportional to 70,876.69, 106,315.27 and 48,622.61

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Solution

The fourth proportional to 70,876.69, 106,315.27 and 48,622.61 is: 72,934.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,876.69 : 106,315.27 = 48,622.61 : x
  2. Step 2: Convert to fraction form
    70,876.69/106,315.27 = 48,622.61/x
  3. Step 3: Cross multiply
    70,876.69x = 106,315.27 × 48,622.61
  4. Step 4: Simplify right side
    70,876.69x = 5,169,326,054.49
  5. Step 5: Solve for x
    x = 5,169,326,054.49/70,876.69
  6. Step 6: Final answer
    x = 72,934.08

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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.