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Finding the Fourth Proportional to 504,521.40, 696,236.10 and 278,166.90

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Solution

The fourth proportional to 504,521.40, 696,236.10 and 278,166.90 is: 383,868.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,521.40 : 696,236.10 = 278,166.90 : x
  2. Step 2: Convert to fraction form
    504,521.40/696,236.10 = 278,166.90/x
  3. Step 3: Cross multiply
    504,521.40x = 696,236.10 × 278,166.90
  4. Step 4: Simplify right side
    504,521.40x = 193,669,837,605.09
  5. Step 5: Solve for x
    x = 193,669,837,605.09/504,521.40
  6. Step 6: Final answer
    x = 383,868.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.