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Finding the Fourth Proportional to 92,877.17, 128,169.36 and 50,436

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Solution

The fourth proportional to 92,877.17, 128,169.36 and 50,436 is: 69,601.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,877.17 : 128,169.36 = 50,436 : x
  2. Step 2: Convert to fraction form
    92,877.17/128,169.36 = 50,436/x
  3. Step 3: Cross multiply
    92,877.17x = 128,169.36 × 50,436
  4. Step 4: Simplify right side
    92,877.17x = 6,464,349,840.96
  5. Step 5: Solve for x
    x = 6,464,349,840.96/92,877.17
  6. Step 6: Final answer
    x = 69,601.07

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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.