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Finding the Fourth Proportional to 543,811.60, 814,920.60 and 487,651.60

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Solution

The fourth proportional to 543,811.60, 814,920.60 and 487,651.60 is: 730,762.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,811.60 : 814,920.60 = 487,651.60 : x
  2. Step 2: Convert to fraction form
    543,811.60/814,920.60 = 487,651.60/x
  3. Step 3: Cross multiply
    543,811.60x = 814,920.60 × 487,651.60
  4. Step 4: Simplify right side
    543,811.60x = 397,397,334,462.96
  5. Step 5: Solve for x
    x = 397,397,334,462.96/543,811.60
  6. Step 6: Final answer
    x = 730,762.89

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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.