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Finding the Fourth Proportional to 317,454.66, 438,086.21 and 174,217.10

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Solution

The fourth proportional to 317,454.66, 438,086.21 and 174,217.10 is: 240,418.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,454.66 : 438,086.21 = 174,217.10 : x
  2. Step 2: Convert to fraction form
    317,454.66/438,086.21 = 174,217.10/x
  3. Step 3: Cross multiply
    317,454.66x = 438,086.21 × 174,217.10
  4. Step 4: Simplify right side
    317,454.66x = 76,322,105,994.67
  5. Step 5: Solve for x
    x = 76,322,105,994.67/317,454.66
  6. Step 6: Final answer
    x = 240,418.92

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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.