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Finding the Fourth Proportional to 516,890.25, 713,354.15 and 290,537.61

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Solution

The fourth proportional to 516,890.25, 713,354.15 and 290,537.61 is: 400,967.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,890.25 : 713,354.15 = 290,537.61 : x
  2. Step 2: Convert to fraction form
    516,890.25/713,354.15 = 290,537.61/x
  3. Step 3: Cross multiply
    516,890.25x = 713,354.15 × 290,537.61
  4. Step 4: Simplify right side
    516,890.25x = 207,256,208,371.89
  5. Step 5: Solve for x
    x = 207,256,208,371.89/516,890.25
  6. Step 6: Final answer
    x = 400,967.53

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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.