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Finding the Fourth Proportional to 317,774.64, 438,511.50 and 174,511.56

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Solution

The fourth proportional to 317,774.64, 438,511.50 and 174,511.56 is: 240,816.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,774.64 : 438,511.50 = 174,511.56 : x
  2. Step 2: Convert to fraction form
    317,774.64/438,511.50 = 174,511.56/x
  3. Step 3: Cross multiply
    317,774.64x = 438,511.50 × 174,511.56
  4. Step 4: Simplify right side
    317,774.64x = 76,525,325,942.94
  5. Step 5: Solve for x
    x = 76,525,325,942.94/317,774.64
  6. Step 6: Final answer
    x = 240,816.34

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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.