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Finding the Fourth Proportional to 292,605, 403,794.90 and 158,469

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Solution

The fourth proportional to 292,605, 403,794.90 and 158,469 is: 218,687.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,605 : 403,794.90 = 158,469 : x
  2. Step 2: Convert to fraction form
    292,605/403,794.90 = 158,469/x
  3. Step 3: Cross multiply
    292,605x = 403,794.90 × 158,469
  4. Step 4: Simplify right side
    292,605x = 63,988,974,008.10
  5. Step 5: Solve for x
    x = 63,988,974,008.10/292,605
  6. Step 6: Final answer
    x = 218,687.22

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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.