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Finding the Fourth Proportional to 292,612, 403,804.56 and 158,476

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Solution

The fourth proportional to 292,612, 403,804.56 and 158,476 is: 218,696.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,612 : 403,804.56 = 158,476 : x
  2. Step 2: Convert to fraction form
    292,612/403,804.56 = 158,476/x
  3. Step 3: Cross multiply
    292,612x = 403,804.56 × 158,476
  4. Step 4: Simplify right side
    292,612x = 63,993,331,450.56
  5. Step 5: Solve for x
    x = 63,993,331,450.56/292,612
  6. Step 6: Final answer
    x = 218,696.88

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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.