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Finding the Fourth Proportional to 92,827.76, 128,168.88 and 57,065.72

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Solution

The fourth proportional to 92,827.76, 128,168.88 and 57,065.72 is: 78,791.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,827.76 : 128,168.88 = 57,065.72 : x
  2. Step 2: Convert to fraction form
    92,827.76/128,168.88 = 57,065.72/x
  3. Step 3: Cross multiply
    92,827.76x = 128,168.88 × 57,065.72
  4. Step 4: Simplify right side
    92,827.76x = 7,314,049,418.79
  5. Step 5: Solve for x
    x = 7,314,049,418.79/92,827.76
  6. Step 6: Final answer
    x = 78,791.62

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1.5x scale

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.