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Finding the Fourth Proportional to 562,691.21, 776,513.89 and 308,042.39

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Solution

The fourth proportional to 562,691.21, 776,513.89 and 308,042.39 is: 425,098.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,691.21 : 776,513.89 = 308,042.39 : x
  2. Step 2: Convert to fraction form
    562,691.21/776,513.89 = 308,042.39/x
  3. Step 3: Cross multiply
    562,691.21x = 776,513.89 × 308,042.39
  4. Step 4: Simplify right side
    562,691.21x = 239,199,196,870.14
  5. Step 5: Solve for x
    x = 239,199,196,870.14/562,691.21
  6. Step 6: Final answer
    x = 425,098.52

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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.