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Finding the Fourth Proportional to 94,687.80, 141,858.90 and 57,708.60

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Solution

The fourth proportional to 94,687.80, 141,858.90 and 57,708.60 is: 86,457.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,687.80 : 141,858.90 = 57,708.60 : x
  2. Step 2: Convert to fraction form
    94,687.80/141,858.90 = 57,708.60/x
  3. Step 3: Cross multiply
    94,687.80x = 141,858.90 × 57,708.60
  4. Step 4: Simplify right side
    94,687.80x = 8,186,478,516.54
  5. Step 5: Solve for x
    x = 8,186,478,516.54/94,687.80
  6. Step 6: Final answer
    x = 86,457.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.