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Finding the Fourth Proportional to 92,639.40, 127,863.36 and 52,376.48

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Solution

The fourth proportional to 92,639.40, 127,863.36 and 52,376.48 is: 72,291.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,639.40 : 127,863.36 = 52,376.48 : x
  2. Step 2: Convert to fraction form
    92,639.40/127,863.36 = 52,376.48/x
  3. Step 3: Cross multiply
    92,639.40x = 127,863.36 × 52,376.48
  4. Step 4: Simplify right side
    92,639.40x = 6,697,032,717.77
  5. Step 5: Solve for x
    x = 6,697,032,717.77/92,639.40
  6. Step 6: Final answer
    x = 72,291.41

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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.