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Finding the Fourth Proportional to 353,803.74, 530,912.97 and 253,856.22

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Solution

The fourth proportional to 353,803.74, 530,912.97 and 253,856.22 is: 380,933.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,803.74 : 530,912.97 = 253,856.22 : x
  2. Step 2: Convert to fraction form
    353,803.74/530,912.97 = 253,856.22/x
  3. Step 3: Cross multiply
    353,803.74x = 530,912.97 × 253,856.22
  4. Step 4: Simplify right side
    353,803.74x = 134,775,559,713.17
  5. Step 5: Solve for x
    x = 134,775,559,713.17/353,803.74
  6. Step 6: Final answer
    x = 380,933.11

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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.