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Finding the Fourth Proportional to 317,475.88, 438,102.66 and 174,236.20

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Solution

The fourth proportional to 317,475.88, 438,102.66 and 174,236.20 is: 240,438.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,475.88 : 438,102.66 = 174,236.20 : x
  2. Step 2: Convert to fraction form
    317,475.88/438,102.66 = 174,236.20/x
  3. Step 3: Cross multiply
    317,475.88x = 438,102.66 × 174,236.20
  4. Step 4: Simplify right side
    317,475.88x = 76,333,342,688.29
  5. Step 5: Solve for x
    x = 76,333,342,688.29/317,475.88
  6. Step 6: Final answer
    x = 240,438.24

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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.