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Finding the Fourth Proportional to 92,378.86, 127,483.99 and 56,069.80

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Solution

The fourth proportional to 92,378.86, 127,483.99 and 56,069.80 is: 77,377.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,378.86 : 127,483.99 = 56,069.80 : x
  2. Step 2: Convert to fraction form
    92,378.86/127,483.99 = 56,069.80/x
  3. Step 3: Cross multiply
    92,378.86x = 127,483.99 × 56,069.80
  4. Step 4: Simplify right side
    92,378.86x = 7,148,001,185.08
  5. Step 5: Solve for x
    x = 7,148,001,185.08/92,378.86
  6. Step 6: Final answer
    x = 77,377.03

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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.