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Finding the Fourth Proportional to 625,178, 862,746 and 338,700.08

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Solution

The fourth proportional to 625,178, 862,746 and 338,700.08 is: 467,406.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,178 : 862,746 = 338,700.08 : x
  2. Step 2: Convert to fraction form
    625,178/862,746 = 338,700.08/x
  3. Step 3: Cross multiply
    625,178x = 862,746 × 338,700.08
  4. Step 4: Simplify right side
    625,178x = 292,212,139,219.68
  5. Step 5: Solve for x
    x = 292,212,139,219.68/625,178
  6. Step 6: Final answer
    x = 467,406.31

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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.