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Finding the Fourth Proportional to 616,922.70, 923,310.45 and 430,298.70

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Solution

The fourth proportional to 616,922.70, 923,310.45 and 430,298.70 is: 644,001.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,922.70 : 923,310.45 = 430,298.70 : x
  2. Step 2: Convert to fraction form
    616,922.70/923,310.45 = 430,298.70/x
  3. Step 3: Cross multiply
    616,922.70x = 923,310.45 × 430,298.70
  4. Step 4: Simplify right side
    616,922.70x = 397,299,286,331.42
  5. Step 5: Solve for x
    x = 397,299,286,331.42/616,922.70
  6. Step 6: Final answer
    x = 644,001.73

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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.