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Finding the Fourth Proportional to 625,242.16, 862,833 and 338,770

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Solution

The fourth proportional to 625,242.16, 862,833 and 338,770 is: 467,501.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,242.16 : 862,833 = 338,770 : x
  2. Step 2: Convert to fraction form
    625,242.16/862,833 = 338,770/x
  3. Step 3: Cross multiply
    625,242.16x = 862,833 × 338,770
  4. Step 4: Simplify right side
    625,242.16x = 292,301,935,410
  5. Step 5: Solve for x
    x = 292,301,935,410/625,242.16
  6. Step 6: Final answer
    x = 467,501.96

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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.