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Finding the Fourth Proportional to 506,937.60, 699,571.20 and 280,579.20

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Solution

The fourth proportional to 506,937.60, 699,571.20 and 280,579.20 is: 387,197.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,937.60 : 699,571.20 = 280,579.20 : x
  2. Step 2: Convert to fraction form
    506,937.60/699,571.20 = 280,579.20/x
  3. Step 3: Cross multiply
    506,937.60x = 699,571.20 × 280,579.20
  4. Step 4: Simplify right side
    506,937.60x = 196,285,127,639.04
  5. Step 5: Solve for x
    x = 196,285,127,639.04/506,937.60
  6. Step 6: Final answer
    x = 387,197.81

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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.