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Finding the Fourth Proportional to 713,406.87, 985,018.17 and 459,200.92

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Solution

The fourth proportional to 713,406.87, 985,018.17 and 459,200.92 is: 634,029.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,406.87 : 985,018.17 = 459,200.92 : x
  2. Step 2: Convert to fraction form
    713,406.87/985,018.17 = 459,200.92/x
  3. Step 3: Cross multiply
    713,406.87x = 985,018.17 × 459,200.92
  4. Step 4: Simplify right side
    713,406.87x = 452,321,251,174.44
  5. Step 5: Solve for x
    x = 452,321,251,174.44/713,406.87
  6. Step 6: Final answer
    x = 634,029.85

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Double scale
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Similar ratio
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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.