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Finding the Fourth Proportional to 718,482, 1,077,906.06 and 213,061.44

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Solution

The fourth proportional to 718,482, 1,077,906.06 and 213,061.44 is: 319,646.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,482 : 1,077,906.06 = 213,061.44 : x
  2. Step 2: Convert to fraction form
    718,482/1,077,906.06 = 213,061.44/x
  3. Step 3: Cross multiply
    718,482x = 1,077,906.06 × 213,061.44
  4. Step 4: Simplify right side
    718,482x = 229,660,217,328.33
  5. Step 5: Solve for x
    x = 229,660,217,328.33/718,482
  6. Step 6: Final answer
    x = 319,646.45

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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.