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Finding the Fourth Proportional to 94,203.92, 141,642.60 and 86,898.80

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Solution

The fourth proportional to 94,203.92, 141,642.60 and 86,898.80 is: 130,658.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,203.92 : 141,642.60 = 86,898.80 : x
  2. Step 2: Convert to fraction form
    94,203.92/141,642.60 = 86,898.80/x
  3. Step 3: Cross multiply
    94,203.92x = 141,642.60 × 86,898.80
  4. Step 4: Simplify right side
    94,203.92x = 12,308,571,968.88
  5. Step 5: Solve for x
    x = 12,308,571,968.88/94,203.92
  6. Step 6: Final answer
    x = 130,658.81

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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.