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Finding the Fourth Proportional to 70,495.07, 105,687.14 and 34,931.95

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Solution

The fourth proportional to 70,495.07, 105,687.14 and 34,931.95 is: 52,370.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,495.07 : 105,687.14 = 34,931.95 : x
  2. Step 2: Convert to fraction form
    70,495.07/105,687.14 = 34,931.95/x
  3. Step 3: Cross multiply
    70,495.07x = 105,687.14 × 34,931.95
  4. Step 4: Simplify right side
    70,495.07x = 3,691,857,890.12
  5. Step 5: Solve for x
    x = 3,691,857,890.12/70,495.07
  6. Step 6: Final answer
    x = 52,370.44

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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.