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Finding the Fourth Proportional to 318,616.09, 439,690.33 and 175,375.11

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Solution

The fourth proportional to 318,616.09, 439,690.33 and 175,375.11 is: 242,017.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,616.09 : 439,690.33 = 175,375.11 : x
  2. Step 2: Convert to fraction form
    318,616.09/439,690.33 = 175,375.11/x
  3. Step 3: Cross multiply
    318,616.09x = 439,690.33 × 175,375.11
  4. Step 4: Simplify right side
    318,616.09x = 77,110,739,989.69
  5. Step 5: Solve for x
    x = 77,110,739,989.69/318,616.09
  6. Step 6: Final answer
    x = 242,017.72

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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.