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Finding the Fourth Proportional to 92,782.59, 128,039.90 and 50,341.02

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Solution

The fourth proportional to 92,782.59, 128,039.90 and 50,341.02 is: 69,470.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,782.59 : 128,039.90 = 50,341.02 : x
  2. Step 2: Convert to fraction form
    92,782.59/128,039.90 = 50,341.02/x
  3. Step 3: Cross multiply
    92,782.59x = 128,039.90 × 50,341.02
  4. Step 4: Simplify right side
    92,782.59x = 6,445,659,166.70
  5. Step 5: Solve for x
    x = 6,445,659,166.70/92,782.59
  6. Step 6: Final answer
    x = 69,470.57

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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.