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Finding the Fourth Proportional to 607,911.14, 911,865.48 and 570,917.87

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Solution

The fourth proportional to 607,911.14, 911,865.48 and 570,917.87 is: 856,375.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,911.14 : 911,865.48 = 570,917.87 : x
  2. Step 2: Convert to fraction form
    607,911.14/911,865.48 = 570,917.87/x
  3. Step 3: Cross multiply
    607,911.14x = 911,865.48 × 570,917.87
  4. Step 4: Simplify right side
    607,911.14x = 520,600,297,568.13
  5. Step 5: Solve for x
    x = 520,600,297,568.13/607,911.14
  6. Step 6: Final answer
    x = 856,375.65

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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.