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Finding the Fourth Proportional to 70,731.73, 106,031.67 and 48,555.55

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Solution

The fourth proportional to 70,731.73, 106,031.67 and 48,555.55 is: 72,788.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,731.73 : 106,031.67 = 48,555.55 : x
  2. Step 2: Convert to fraction form
    70,731.73/106,031.67 = 48,555.55/x
  3. Step 3: Cross multiply
    70,731.73x = 106,031.67 × 48,555.55
  4. Step 4: Simplify right side
    70,731.73x = 5,148,426,054.27
  5. Step 5: Solve for x
    x = 5,148,426,054.27/70,731.73
  6. Step 6: Final answer
    x = 72,788.07

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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.