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Finding the Fourth Proportional to 417,958.40, 626,616.12 and 207,433.04

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Solution

The fourth proportional to 417,958.40, 626,616.12 and 207,433.04 is: 310,990.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,958.40 : 626,616.12 = 207,433.04 : x
  2. Step 2: Convert to fraction form
    417,958.40/626,616.12 = 207,433.04/x
  3. Step 3: Cross multiply
    417,958.40x = 626,616.12 × 207,433.04
  4. Step 4: Simplify right side
    417,958.40x = 129,980,886,684.61
  5. Step 5: Solve for x
    x = 129,980,886,684.61/417,958.40
  6. Step 6: Final answer
    x = 310,990.01

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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.