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Finding the Fourth Proportional to 516,696.35, 713,000.59 and 287,239.68

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Solution

The fourth proportional to 516,696.35, 713,000.59 and 287,239.68 is: 396,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,696.35 : 713,000.59 = 287,239.68 : x
  2. Step 2: Convert to fraction form
    516,696.35/713,000.59 = 287,239.68/x
  3. Step 3: Cross multiply
    516,696.35x = 713,000.59 × 287,239.68
  4. Step 4: Simplify right side
    516,696.35x = 204,802,056,310.21
  5. Step 5: Solve for x
    x = 204,802,056,310.21/516,696.35
  6. Step 6: Final answer
    x = 396,368.30

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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.