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Finding the Fourth Proportional to 670,576.32, 925,419.65 and 384,151.76

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Solution

The fourth proportional to 670,576.32, 925,419.65 and 384,151.76 is: 530,143.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,576.32 : 925,419.65 = 384,151.76 : x
  2. Step 2: Convert to fraction form
    670,576.32/925,419.65 = 384,151.76/x
  3. Step 3: Cross multiply
    670,576.32x = 925,419.65 × 384,151.76
  4. Step 4: Simplify right side
    670,576.32x = 355,501,589,457.14
  5. Step 5: Solve for x
    x = 355,501,589,457.14/670,576.32
  6. Step 6: Final answer
    x = 530,143.37

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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.