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Finding the Fourth Proportional to 431,566.55, 603,405.85 and 431,566.55

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Solution

The fourth proportional to 431,566.55, 603,405.85 and 431,566.55 is: 603,405.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,566.55 : 603,405.85 = 431,566.55 : x
  2. Step 2: Convert to fraction form
    431,566.55/603,405.85 = 431,566.55/x
  3. Step 3: Cross multiply
    431,566.55x = 603,405.85 × 431,566.55
  4. Step 4: Simplify right side
    431,566.55x = 260,409,780,934.32
  5. Step 5: Solve for x
    x = 260,409,780,934.32/431,566.55
  6. Step 6: Final answer
    x = 603,405.85

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.