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Finding the Fourth Proportional to 713,193.82, 984,231.26 and 390,904.73

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Solution

The fourth proportional to 713,193.82, 984,231.26 and 390,904.73 is: 539,461.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,193.82 : 984,231.26 = 390,904.73 : x
  2. Step 2: Convert to fraction form
    713,193.82/984,231.26 = 390,904.73/x
  3. Step 3: Cross multiply
    713,193.82x = 984,231.26 × 390,904.73
  4. Step 4: Simplify right side
    713,193.82x = 384,740,652,993.34
  5. Step 5: Solve for x
    x = 384,740,652,993.34/713,193.82
  6. Step 6: Final answer
    x = 539,461.57

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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.