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Finding the Fourth Proportional to 506,668.80, 699,197.76 and 280,315.92

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Solution

The fourth proportional to 506,668.80, 699,197.76 and 280,315.92 is: 386,833.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,668.80 : 699,197.76 = 280,315.92 : x
  2. Step 2: Convert to fraction form
    506,668.80/699,197.76 = 280,315.92/x
  3. Step 3: Cross multiply
    506,668.80x = 699,197.76 × 280,315.92
  4. Step 4: Simplify right side
    506,668.80x = 195,996,263,356.34
  5. Step 5: Solve for x
    x = 195,996,263,356.34/506,668.80
  6. Step 6: Final answer
    x = 386,833.10

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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.