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Finding the Fourth Proportional to 194,485.53, 268,389.63 and 105,061.53

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Solution

The fourth proportional to 194,485.53, 268,389.63 and 105,061.53 is: 144,984.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,485.53 : 268,389.63 = 105,061.53 : x
  2. Step 2: Convert to fraction form
    194,485.53/268,389.63 = 105,061.53/x
  3. Step 3: Cross multiply
    194,485.53x = 268,389.63 × 105,061.53
  4. Step 4: Simplify right side
    194,485.53x = 28,197,425,163.93
  5. Step 5: Solve for x
    x = 28,197,425,163.93/194,485.53
  6. Step 6: Final answer
    x = 144,984.69

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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.