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Finding the Fourth Proportional to 318,339.17, 439,298.78 and 175,099.17

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Solution

The fourth proportional to 318,339.17, 439,298.78 and 175,099.17 is: 241,631.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,339.17 : 439,298.78 = 175,099.17 : x
  2. Step 2: Convert to fraction form
    318,339.17/439,298.78 = 175,099.17/x
  3. Step 3: Cross multiply
    318,339.17x = 439,298.78 × 175,099.17
  4. Step 4: Simplify right side
    318,339.17x = 76,920,851,760.01
  5. Step 5: Solve for x
    x = 76,920,851,760.01/318,339.17
  6. Step 6: Final answer
    x = 241,631.75

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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.