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Finding the Fourth Proportional to 262,661.40, 393,846.30 and 104,711.40

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Solution

The fourth proportional to 262,661.40, 393,846.30 and 104,711.40 is: 157,008.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,661.40 : 393,846.30 = 104,711.40 : x
  2. Step 2: Convert to fraction form
    262,661.40/393,846.30 = 104,711.40/x
  3. Step 3: Cross multiply
    262,661.40x = 393,846.30 × 104,711.40
  4. Step 4: Simplify right side
    262,661.40x = 41,240,197,457.82
  5. Step 5: Solve for x
    x = 41,240,197,457.82/262,661.40
  6. Step 6: Final answer
    x = 157,008.98

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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.