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Finding the Fourth Proportional to 92,910.51, 128,211.26 and 52,634.21

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Solution

The fourth proportional to 92,910.51, 128,211.26 and 52,634.21 is: 72,632.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,910.51 : 128,211.26 = 52,634.21 : x
  2. Step 2: Convert to fraction form
    92,910.51/128,211.26 = 52,634.21/x
  3. Step 3: Cross multiply
    92,910.51x = 128,211.26 × 52,634.21
  4. Step 4: Simplify right side
    92,910.51x = 6,748,297,478.98
  5. Step 5: Solve for x
    x = 6,748,297,478.98/92,910.51
  6. Step 6: Final answer
    x = 72,632.23

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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.