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Finding the Fourth Proportional to 586,358.85, 809,176.77 and 318,086.85

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Solution

The fourth proportional to 586,358.85, 809,176.77 and 318,086.85 is: 438,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,358.85 : 809,176.77 = 318,086.85 : x
  2. Step 2: Convert to fraction form
    586,358.85/809,176.77 = 318,086.85/x
  3. Step 3: Cross multiply
    586,358.85x = 809,176.77 × 318,086.85
  4. Step 4: Simplify right side
    586,358.85x = 257,388,489,862.48
  5. Step 5: Solve for x
    x = 257,388,489,862.48/586,358.85
  6. Step 6: Final answer
    x = 438,960.70

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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.