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Finding the Fourth Proportional to 163,625.40, 245,438.10 and 132,521.40

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Solution

The fourth proportional to 163,625.40, 245,438.10 and 132,521.40 is: 198,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,625.40 : 245,438.10 = 132,521.40 : x
  2. Step 2: Convert to fraction form
    163,625.40/245,438.10 = 132,521.40/x
  3. Step 3: Cross multiply
    163,625.40x = 245,438.10 × 132,521.40
  4. Step 4: Simplify right side
    163,625.40x = 32,525,800,625.34
  5. Step 5: Solve for x
    x = 32,525,800,625.34/163,625.40
  6. Step 6: Final answer
    x = 198,782.10

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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.