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Finding the Fourth Proportional to 124,621.68, 171,975.24 and 68,034

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Solution

The fourth proportional to 124,621.68, 171,975.24 and 68,034 is: 93,885.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,621.68 : 171,975.24 = 68,034 : x
  2. Step 2: Convert to fraction form
    124,621.68/171,975.24 = 68,034/x
  3. Step 3: Cross multiply
    124,621.68x = 171,975.24 × 68,034
  4. Step 4: Simplify right side
    124,621.68x = 11,700,163,478.16
  5. Step 5: Solve for x
    x = 11,700,163,478.16/124,621.68
  6. Step 6: Final answer
    x = 93,885.46

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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.