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Finding the Fourth Proportional to 92,407.68, 127,521.97 and 52,121.77

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Solution

The fourth proportional to 92,407.68, 127,521.97 and 52,121.77 is: 71,927.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,407.68 : 127,521.97 = 52,121.77 : x
  2. Step 2: Convert to fraction form
    92,407.68/127,521.97 = 52,121.77/x
  3. Step 3: Cross multiply
    92,407.68x = 127,521.97 × 52,121.77
  4. Step 4: Simplify right side
    92,407.68x = 6,646,670,341.18
  5. Step 5: Solve for x
    x = 6,646,670,341.18/92,407.68
  6. Step 6: Final answer
    x = 71,927.68

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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.