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Finding the Fourth Proportional to 92,402.81, 127,529 and 56,122.61

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Solution

The fourth proportional to 92,402.81, 127,529 and 56,122.61 is: 77,457.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,402.81 : 127,529 = 56,122.61 : x
  2. Step 2: Convert to fraction form
    92,402.81/127,529 = 56,122.61/x
  3. Step 3: Cross multiply
    92,402.81x = 127,529 × 56,122.61
  4. Step 4: Simplify right side
    92,402.81x = 7,157,260,330.69
  5. Step 5: Solve for x
    x = 7,157,260,330.69/92,402.81
  6. Step 6: Final answer
    x = 77,457.17

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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.