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Finding the Fourth Proportional to 92,960.64, 128,252.16 and 61,146.72

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Solution

The fourth proportional to 92,960.64, 128,252.16 and 61,146.72 is: 84,360.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,960.64 : 128,252.16 = 61,146.72 : x
  2. Step 2: Convert to fraction form
    92,960.64/128,252.16 = 61,146.72/x
  3. Step 3: Cross multiply
    92,960.64x = 128,252.16 × 61,146.72
  4. Step 4: Simplify right side
    92,960.64x = 7,842,198,916.92
  5. Step 5: Solve for x
    x = 7,842,198,916.92/92,960.64
  6. Step 6: Final answer
    x = 84,360.42

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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.