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Finding the Fourth Proportional to 92,379.73, 127,485.20 and 56,070.67

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Solution

The fourth proportional to 92,379.73, 127,485.20 and 56,070.67 is: 77,378.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,379.73 : 127,485.20 = 56,070.67 : x
  2. Step 2: Convert to fraction form
    92,379.73/127,485.20 = 56,070.67/x
  3. Step 3: Cross multiply
    92,379.73x = 127,485.20 × 56,070.67
  4. Step 4: Simplify right side
    92,379.73x = 7,148,180,579.08
  5. Step 5: Solve for x
    x = 7,148,180,579.08/92,379.73
  6. Step 6: Final answer
    x = 77,378.24

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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.