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Finding the Fourth Proportional to 292,308.84, 403,386.12 and 158,172.84

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Solution

The fourth proportional to 292,308.84, 403,386.12 and 158,172.84 is: 218,278.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,308.84 : 403,386.12 = 158,172.84 : x
  2. Step 2: Convert to fraction form
    292,308.84/403,386.12 = 158,172.84/x
  3. Step 3: Cross multiply
    292,308.84x = 403,386.12 × 158,172.84
  4. Step 4: Simplify right side
    292,308.84x = 63,804,728,216.98
  5. Step 5: Solve for x
    x = 63,804,728,216.98/292,308.84
  6. Step 6: Final answer
    x = 218,278.48

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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.