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Finding the Fourth Proportional to 134,605.83, 201,718.16 and 74,660.60

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Solution

The fourth proportional to 134,605.83, 201,718.16 and 74,660.60 is: 111,885.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,605.83 : 201,718.16 = 74,660.60 : x
  2. Step 2: Convert to fraction form
    134,605.83/201,718.16 = 74,660.60/x
  3. Step 3: Cross multiply
    134,605.83x = 201,718.16 × 74,660.60
  4. Step 4: Simplify right side
    134,605.83x = 15,060,397,474.60
  5. Step 5: Solve for x
    x = 15,060,397,474.60/134,605.83
  6. Step 6: Final answer
    x = 111,885.18

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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.