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Finding the Fourth Proportional to 515,638.20, 772,801.20 and 248,824.20

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Solution

The fourth proportional to 515,638.20, 772,801.20 and 248,824.20 is: 372,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,638.20 : 772,801.20 = 248,824.20 : x
  2. Step 2: Convert to fraction form
    515,638.20/772,801.20 = 248,824.20/x
  3. Step 3: Cross multiply
    515,638.20x = 772,801.20 × 248,824.20
  4. Step 4: Simplify right side
    515,638.20x = 192,291,640,349.04
  5. Step 5: Solve for x
    x = 192,291,640,349.04/515,638.20
  6. Step 6: Final answer
    x = 372,919.70

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1.5x scale

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.