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Finding the Fourth Proportional to 126,653.52, 189,914.16 and 63,405.36

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Solution

The fourth proportional to 126,653.52, 189,914.16 and 63,405.36 is: 95,074.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,653.52 : 189,914.16 = 63,405.36 : x
  2. Step 2: Convert to fraction form
    126,653.52/189,914.16 = 63,405.36/x
  3. Step 3: Cross multiply
    126,653.52x = 189,914.16 × 63,405.36
  4. Step 4: Simplify right side
    126,653.52x = 12,041,575,683.90
  5. Step 5: Solve for x
    x = 12,041,575,683.90/126,653.52
  6. Step 6: Final answer
    x = 95,074.94

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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.