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Finding the Fourth Proportional to 94,606.70, 141,976.55 and 85,562.01

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Solution

The fourth proportional to 94,606.70, 141,976.55 and 85,562.01 is: 128,403.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,606.70 : 141,976.55 = 85,562.01 : x
  2. Step 2: Convert to fraction form
    94,606.70/141,976.55 = 85,562.01/x
  3. Step 3: Cross multiply
    94,606.70x = 141,976.55 × 85,562.01
  4. Step 4: Simplify right side
    94,606.70x = 12,147,798,563.06
  5. Step 5: Solve for x
    x = 12,147,798,563.06/94,606.70
  6. Step 6: Final answer
    x = 128,403.16

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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.