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Finding the Fourth Proportional to 92,838.11, 128,220.92 and 62,747.61

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Solution

The fourth proportional to 92,838.11, 128,220.92 and 62,747.61 is: 86,662.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,838.11 : 128,220.92 = 62,747.61 : x
  2. Step 2: Convert to fraction form
    92,838.11/128,220.92 = 62,747.61/x
  3. Step 3: Cross multiply
    92,838.11x = 128,220.92 × 62,747.61
  4. Step 4: Simplify right side
    92,838.11x = 8,045,555,968.26
  5. Step 5: Solve for x
    x = 8,045,555,968.26/92,838.11
  6. Step 6: Final answer
    x = 86,662.22

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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.