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Finding the Fourth Proportional to 713,912.22, 985,200.36 and 391,624.92

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Solution

The fourth proportional to 713,912.22, 985,200.36 and 391,624.92 is: 540,443.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,912.22 : 985,200.36 = 391,624.92 : x
  2. Step 2: Convert to fraction form
    713,912.22/985,200.36 = 391,624.92/x
  3. Step 3: Cross multiply
    713,912.22x = 985,200.36 × 391,624.92
  4. Step 4: Simplify right side
    713,912.22x = 385,829,012,168.97
  5. Step 5: Solve for x
    x = 385,829,012,168.97/713,912.22
  6. Step 6: Final answer
    x = 540,443.21

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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.