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Finding the Fourth Proportional to 318,706.30, 439,806.16 and 175,467.42

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Solution

The fourth proportional to 318,706.30, 439,806.16 and 175,467.42 is: 242,140.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,706.30 : 439,806.16 = 175,467.42 : x
  2. Step 2: Convert to fraction form
    318,706.30/439,806.16 = 175,467.42/x
  3. Step 3: Cross multiply
    318,706.30x = 439,806.16 × 175,467.42
  4. Step 4: Simplify right side
    318,706.30x = 77,171,652,195.31
  5. Step 5: Solve for x
    x = 77,171,652,195.31/318,706.30
  6. Step 6: Final answer
    x = 242,140.34

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1.5x scale

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.