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Finding the Fourth Proportional to 712,099.17, 982,707.66 and 389,839.25

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Solution

The fourth proportional to 712,099.17, 982,707.66 and 389,839.25 is: 537,984.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,099.17 : 982,707.66 = 389,839.25 : x
  2. Step 2: Convert to fraction form
    712,099.17/982,707.66 = 389,839.25/x
  3. Step 3: Cross multiply
    712,099.17x = 982,707.66 × 389,839.25
  4. Step 4: Simplify right side
    712,099.17x = 383,098,012,230.12
  5. Step 5: Solve for x
    x = 383,098,012,230.12/712,099.17
  6. Step 6: Final answer
    x = 537,984.07

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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.