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Finding the Fourth Proportional to 153,595.44, 211,974.03 and 85,634.42

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Solution

The fourth proportional to 153,595.44, 211,974.03 and 85,634.42 is: 118,182.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,595.44 : 211,974.03 = 85,634.42 : x
  2. Step 2: Convert to fraction form
    153,595.44/211,974.03 = 85,634.42/x
  3. Step 3: Cross multiply
    153,595.44x = 211,974.03 × 85,634.42
  4. Step 4: Simplify right side
    153,595.44x = 18,152,272,054.24
  5. Step 5: Solve for x
    x = 18,152,272,054.24/153,595.44
  6. Step 6: Final answer
    x = 118,182.36

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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.