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Finding the Fourth Proportional to 675,109.56, 931,648.86 and 373,303.56

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Solution

The fourth proportional to 675,109.56, 931,648.86 and 373,303.56 is: 515,157.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,109.56 : 931,648.86 = 373,303.56 : x
  2. Step 2: Convert to fraction form
    675,109.56/931,648.86 = 373,303.56/x
  3. Step 3: Cross multiply
    675,109.56x = 931,648.86 × 373,303.56
  4. Step 4: Simplify right side
    675,109.56x = 347,787,836,107.94
  5. Step 5: Solve for x
    x = 347,787,836,107.94/675,109.56
  6. Step 6: Final answer
    x = 515,157.62

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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.