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Finding the Fourth Proportional to 66,694.82, 92,031.80 and 39,833.60

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Solution

The fourth proportional to 66,694.82, 92,031.80 and 39,833.60 is: 54,966.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,694.82 : 92,031.80 = 39,833.60 : x
  2. Step 2: Convert to fraction form
    66,694.82/92,031.80 = 39,833.60/x
  3. Step 3: Cross multiply
    66,694.82x = 92,031.80 × 39,833.60
  4. Step 4: Simplify right side
    66,694.82x = 3,665,957,908.48
  5. Step 5: Solve for x
    x = 3,665,957,908.48/66,694.82
  6. Step 6: Final answer
    x = 54,966.16

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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.