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Finding the Fourth Proportional to 292,387.70, 403,498.40 and 171,531.05

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Solution

The fourth proportional to 292,387.70, 403,498.40 and 171,531.05 is: 236,714.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,387.70 : 403,498.40 = 171,531.05 : x
  2. Step 2: Convert to fraction form
    292,387.70/403,498.40 = 171,531.05/x
  3. Step 3: Cross multiply
    292,387.70x = 403,498.40 × 171,531.05
  4. Step 4: Simplify right side
    292,387.70x = 69,212,501,350.17
  5. Step 5: Solve for x
    x = 69,212,501,350.17/292,387.70
  6. Step 6: Final answer
    x = 236,714.82

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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.