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Finding the Fourth Proportional to 416,623.80, 624,935.70 and 136,169.40

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Solution

The fourth proportional to 416,623.80, 624,935.70 and 136,169.40 is: 204,254.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,623.80 : 624,935.70 = 136,169.40 : x
  2. Step 2: Convert to fraction form
    416,623.80/624,935.70 = 136,169.40/x
  3. Step 3: Cross multiply
    416,623.80x = 624,935.70 × 136,169.40
  4. Step 4: Simplify right side
    416,623.80x = 85,097,119,307.58
  5. Step 5: Solve for x
    x = 85,097,119,307.58/416,623.80
  6. Step 6: Final answer
    x = 204,254.10

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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.