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Finding the Fourth Proportional to 577,486.60, 865,646.70 and 262,169.80

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Solution

The fourth proportional to 577,486.60, 865,646.70 and 262,169.80 is: 392,989.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,486.60 : 865,646.70 = 262,169.80 : x
  2. Step 2: Convert to fraction form
    577,486.60/865,646.70 = 262,169.80/x
  3. Step 3: Cross multiply
    577,486.60x = 865,646.70 × 262,169.80
  4. Step 4: Simplify right side
    577,486.60x = 226,946,422,209.66
  5. Step 5: Solve for x
    x = 226,946,422,209.66/577,486.60
  6. Step 6: Final answer
    x = 392,989.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.