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Finding the Fourth Proportional to 572,814.20, 859,221.30 and 492,332.60

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Solution

The fourth proportional to 572,814.20, 859,221.30 and 492,332.60 is: 738,498.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,814.20 : 859,221.30 = 492,332.60 : x
  2. Step 2: Convert to fraction form
    572,814.20/859,221.30 = 492,332.60/x
  3. Step 3: Cross multiply
    572,814.20x = 859,221.30 × 492,332.60
  4. Step 4: Simplify right side
    572,814.20x = 423,022,656,604.38
  5. Step 5: Solve for x
    x = 423,022,656,604.38/572,814.20
  6. Step 6: Final answer
    x = 738,498.90

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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.