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Finding the Fourth Proportional to 506,908.09, 699,555.23 and 280,553.53

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Solution

The fourth proportional to 506,908.09, 699,555.23 and 280,553.53 is: 387,176.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,908.09 : 699,555.23 = 280,553.53 : x
  2. Step 2: Convert to fraction form
    506,908.09/699,555.23 = 280,553.53/x
  3. Step 3: Cross multiply
    506,908.09x = 699,555.23 × 280,553.53
  4. Step 4: Simplify right side
    506,908.09x = 196,262,687,803.69
  5. Step 5: Solve for x
    x = 196,262,687,803.69/506,908.09
  6. Step 6: Final answer
    x = 387,176.08

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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.