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Finding the Fourth Proportional to 693,548, 957,174.12 and 391,761.44

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Solution

The fourth proportional to 693,548, 957,174.12 and 391,761.44 is: 540,674.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,548 : 957,174.12 = 391,761.44 : x
  2. Step 2: Convert to fraction form
    693,548/957,174.12 = 391,761.44/x
  3. Step 3: Cross multiply
    693,548x = 957,174.12 × 391,761.44
  4. Step 4: Simplify right side
    693,548x = 374,983,911,581.93
  5. Step 5: Solve for x
    x = 374,983,911,581.93/693,548
  6. Step 6: Final answer
    x = 540,674.78

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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.