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Finding the Fourth Proportional to 157,645.80, 236,687.40 and 98,596.80

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Solution

The fourth proportional to 157,645.80, 236,687.40 and 98,596.80 is: 148,031.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,645.80 : 236,687.40 = 98,596.80 : x
  2. Step 2: Convert to fraction form
    157,645.80/236,687.40 = 98,596.80/x
  3. Step 3: Cross multiply
    157,645.80x = 236,687.40 × 98,596.80
  4. Step 4: Simplify right side
    157,645.80x = 23,336,620,240.32
  5. Step 5: Solve for x
    x = 23,336,620,240.32/157,645.80
  6. Step 6: Final answer
    x = 148,031.98

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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.