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Finding the Fourth Proportional to 695,306.76, 959,575.74 and 389,367.56

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Solution

The fourth proportional to 695,306.76, 959,575.74 and 389,367.56 is: 537,356.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,306.76 : 959,575.74 = 389,367.56 : x
  2. Step 2: Convert to fraction form
    695,306.76/959,575.74 = 389,367.56/x
  3. Step 3: Cross multiply
    695,306.76x = 959,575.74 × 389,367.56
  4. Step 4: Simplify right side
    695,306.76x = 373,627,664,518.99
  5. Step 5: Solve for x
    x = 373,627,664,518.99/695,306.76
  6. Step 6: Final answer
    x = 537,356.58

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Double scale
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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.