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Finding the Fourth Proportional to 712,791.32, 983,684.40 and 406,950.44

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Solution

The fourth proportional to 712,791.32, 983,684.40 and 406,950.44 is: 561,610.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,791.32 : 983,684.40 = 406,950.44 : x
  2. Step 2: Convert to fraction form
    712,791.32/983,684.40 = 406,950.44/x
  3. Step 3: Cross multiply
    712,791.32x = 983,684.40 × 406,950.44
  4. Step 4: Simplify right side
    712,791.32x = 400,310,799,401.14
  5. Step 5: Solve for x
    x = 400,310,799,401.14/712,791.32
  6. Step 6: Final answer
    x = 561,610.09

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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.