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Finding the Fourth Proportional to 417,638.40, 626,515.20 and 151,334.40

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Solution

The fourth proportional to 417,638.40, 626,515.20 and 151,334.40 is: 227,022.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,638.40 : 626,515.20 = 151,334.40 : x
  2. Step 2: Convert to fraction form
    417,638.40/626,515.20 = 151,334.40/x
  3. Step 3: Cross multiply
    417,638.40x = 626,515.20 × 151,334.40
  4. Step 4: Simplify right side
    417,638.40x = 94,813,301,882.88
  5. Step 5: Solve for x
    x = 94,813,301,882.88/417,638.40
  6. Step 6: Final answer
    x = 227,022.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.