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Finding the Fourth Proportional to 712,010.56, 982,583.82 and 389,713.75

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Solution

The fourth proportional to 712,010.56, 982,583.82 and 389,713.75 is: 537,810.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,010.56 : 982,583.82 = 389,713.75 : x
  2. Step 2: Convert to fraction form
    712,010.56/982,583.82 = 389,713.75/x
  3. Step 3: Cross multiply
    712,010.56x = 982,583.82 × 389,713.75
  4. Step 4: Simplify right side
    712,010.56x = 382,926,425,181.53
  5. Step 5: Solve for x
    x = 382,926,425,181.53/712,010.56
  6. Step 6: Final answer
    x = 537,810.04

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Double scale
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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.