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Finding the Fourth Proportional to 368,515.71, 551,887.74 and 210,264.39

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Solution

The fourth proportional to 368,515.71, 551,887.74 and 210,264.39 is: 314,891.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,515.71 : 551,887.74 = 210,264.39 : x
  2. Step 2: Convert to fraction form
    368,515.71/551,887.74 = 210,264.39/x
  3. Step 3: Cross multiply
    368,515.71x = 551,887.74 × 210,264.39
  4. Step 4: Simplify right side
    368,515.71x = 116,042,338,999.58
  5. Step 5: Solve for x
    x = 116,042,338,999.58/368,515.71
  6. Step 6: Final answer
    x = 314,891.16

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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.