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Finding the Fourth Proportional to 92,961.22, 128,270.64 and 52,666.66

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Solution

The fourth proportional to 92,961.22, 128,270.64 and 52,666.66 is: 72,671.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,961.22 : 128,270.64 = 52,666.66 : x
  2. Step 2: Convert to fraction form
    92,961.22/128,270.64 = 52,666.66/x
  3. Step 3: Cross multiply
    92,961.22x = 128,270.64 × 52,666.66
  4. Step 4: Simplify right side
    92,961.22x = 6,755,586,184.86
  5. Step 5: Solve for x
    x = 6,755,586,184.86/92,961.22
  6. Step 6: Final answer
    x = 72,671.01

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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.