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Finding the Fourth Proportional to 317,626.44, 438,325.34 and 174,395.76

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Solution

The fourth proportional to 317,626.44, 438,325.34 and 174,395.76 is: 240,666.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,626.44 : 438,325.34 = 174,395.76 : x
  2. Step 2: Convert to fraction form
    317,626.44/438,325.34 = 174,395.76/x
  3. Step 3: Cross multiply
    317,626.44x = 438,325.34 × 174,395.76
  4. Step 4: Simplify right side
    317,626.44x = 76,442,079,261.84
  5. Step 5: Solve for x
    x = 76,442,079,261.84/317,626.44
  6. Step 6: Final answer
    x = 240,666.62

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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.