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Finding the Fourth Proportional to 605,615.80, 908,423.70 and 572,956.60

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Solution

The fourth proportional to 605,615.80, 908,423.70 and 572,956.60 is: 859,434.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,615.80 : 908,423.70 = 572,956.60 : x
  2. Step 2: Convert to fraction form
    605,615.80/908,423.70 = 572,956.60/x
  3. Step 3: Cross multiply
    605,615.80x = 908,423.70 × 572,956.60
  4. Step 4: Simplify right side
    605,615.80x = 520,487,354,511.42
  5. Step 5: Solve for x
    x = 520,487,354,511.42/605,615.80
  6. Step 6: Final answer
    x = 859,434.90

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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.