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Finding the Fourth Proportional to 712,791.82, 983,653.53 and 386,105.50

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Solution

The fourth proportional to 712,791.82, 983,653.53 and 386,105.50 is: 532,826.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,791.82 : 983,653.53 = 386,105.50 : x
  2. Step 2: Convert to fraction form
    712,791.82/983,653.53 = 386,105.50/x
  3. Step 3: Cross multiply
    712,791.82x = 983,653.53 × 386,105.50
  4. Step 4: Simplify right side
    712,791.82x = 379,794,038,027.42
  5. Step 5: Solve for x
    x = 379,794,038,027.42/712,791.82
  6. Step 6: Final answer
    x = 532,826.03

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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.