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Finding the Fourth Proportional to 92,012.94, 126,969.12 and 53,781.45

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Solution

The fourth proportional to 92,012.94, 126,969.12 and 53,781.45 is: 74,213.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,012.94 : 126,969.12 = 53,781.45 : x
  2. Step 2: Convert to fraction form
    92,012.94/126,969.12 = 53,781.45/x
  3. Step 3: Cross multiply
    92,012.94x = 126,969.12 × 53,781.45
  4. Step 4: Simplify right side
    92,012.94x = 6,828,583,378.82
  5. Step 5: Solve for x
    x = 6,828,583,378.82/92,012.94
  6. Step 6: Final answer
    x = 74,213.29

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1.5x scale

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.