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Finding the Fourth Proportional to 117,009.90, 175,514.85 and 99,295.20

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Solution

The fourth proportional to 117,009.90, 175,514.85 and 99,295.20 is: 148,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,009.90 : 175,514.85 = 99,295.20 : x
  2. Step 2: Convert to fraction form
    117,009.90/175,514.85 = 99,295.20/x
  3. Step 3: Cross multiply
    117,009.90x = 175,514.85 × 99,295.20
  4. Step 4: Simplify right side
    117,009.90x = 17,427,782,133.72
  5. Step 5: Solve for x
    x = 17,427,782,133.72/117,009.90
  6. Step 6: Final answer
    x = 148,942.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.