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Finding the Fourth Proportional to 66,792.60, 92,145.06 and 38,481.48

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Solution

The fourth proportional to 66,792.60, 92,145.06 and 38,481.48 is: 53,087.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,792.60 : 92,145.06 = 38,481.48 : x
  2. Step 2: Convert to fraction form
    66,792.60/92,145.06 = 38,481.48/x
  3. Step 3: Cross multiply
    66,792.60x = 92,145.06 × 38,481.48
  4. Step 4: Simplify right side
    66,792.60x = 3,545,878,283.49
  5. Step 5: Solve for x
    x = 3,545,878,283.49/66,792.60
  6. Step 6: Final answer
    x = 53,087.89

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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.