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Finding the Fourth Proportional to 713,920.82, 985,201.52 and 407,993.70

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Solution

The fourth proportional to 713,920.82, 985,201.52 and 407,993.70 is: 563,026.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,920.82 : 985,201.52 = 407,993.70 : x
  2. Step 2: Convert to fraction form
    713,920.82/985,201.52 = 407,993.70/x
  3. Step 3: Cross multiply
    713,920.82x = 985,201.52 × 407,993.70
  4. Step 4: Simplify right side
    713,920.82x = 401,956,013,390.42
  5. Step 5: Solve for x
    x = 401,956,013,390.42/713,920.82
  6. Step 6: Final answer
    x = 563,026.04

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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.