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Finding the Fourth Proportional to 70,901.61, 106,354.47 and 26,519.89

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Solution

The fourth proportional to 70,901.61, 106,354.47 and 26,519.89 is: 39,780.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,901.61 : 106,354.47 = 26,519.89 : x
  2. Step 2: Convert to fraction form
    70,901.61/106,354.47 = 26,519.89/x
  3. Step 3: Cross multiply
    70,901.61x = 106,354.47 × 26,519.89
  4. Step 4: Simplify right side
    70,901.61x = 2,820,508,845.41
  5. Step 5: Solve for x
    x = 2,820,508,845.41/70,901.61
  6. Step 6: Final answer
    x = 39,780.60

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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.