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Finding the Fourth Proportional to 409,899.40, 614,964.30 and 173,355.40

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Solution

The fourth proportional to 409,899.40, 614,964.30 and 173,355.40 is: 260,081.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,899.40 : 614,964.30 = 173,355.40 : x
  2. Step 2: Convert to fraction form
    409,899.40/614,964.30 = 173,355.40/x
  3. Step 3: Cross multiply
    409,899.40x = 614,964.30 × 173,355.40
  4. Step 4: Simplify right side
    409,899.40x = 106,607,382,212.22
  5. Step 5: Solve for x
    x = 106,607,382,212.22/409,899.40
  6. Step 6: Final answer
    x = 260,081.82

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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.