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Finding the Fourth Proportional to 70,406.28, 97,246.98 and 56,992.68

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Solution

The fourth proportional to 70,406.28, 97,246.98 and 56,992.68 is: 78,719.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,406.28 : 97,246.98 = 56,992.68 : x
  2. Step 2: Convert to fraction form
    70,406.28/97,246.98 = 56,992.68/x
  3. Step 3: Cross multiply
    70,406.28x = 97,246.98 × 56,992.68
  4. Step 4: Simplify right side
    70,406.28x = 5,542,366,012.11
  5. Step 5: Solve for x
    x = 5,542,366,012.11/70,406.28
  6. Step 6: Final answer
    x = 78,719.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.