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Finding the Fourth Proportional to 626,116.91, 864,041.63 and 354,179.11

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Solution

The fourth proportional to 626,116.91, 864,041.63 and 354,179.11 is: 488,767.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,116.91 : 864,041.63 = 354,179.11 : x
  2. Step 2: Convert to fraction form
    626,116.91/864,041.63 = 354,179.11/x
  3. Step 3: Cross multiply
    626,116.91x = 864,041.63 × 354,179.11
  4. Step 4: Simplify right side
    626,116.91x = 306,025,492,767.57
  5. Step 5: Solve for x
    x = 306,025,492,767.57/626,116.91
  6. Step 6: Final answer
    x = 488,767.33

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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.