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Finding the Fourth Proportional to 515,063.30, 710,786.23 and 285,614.89

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Solution

The fourth proportional to 515,063.30, 710,786.23 and 285,614.89 is: 394,147.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,063.30 : 710,786.23 = 285,614.89 : x
  2. Step 2: Convert to fraction form
    515,063.30/710,786.23 = 285,614.89/x
  3. Step 3: Cross multiply
    515,063.30x = 710,786.23 × 285,614.89
  4. Step 4: Simplify right side
    515,063.30x = 203,011,128,403.96
  5. Step 5: Solve for x
    x = 203,011,128,403.96/515,063.30
  6. Step 6: Final answer
    x = 394,147.92

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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.