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Finding the Fourth Proportional to 556,883.91, 768,518.28 and 315,163.71

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Solution

The fourth proportional to 556,883.91, 768,518.28 and 315,163.71 is: 434,936.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,883.91 : 768,518.28 = 315,163.71 : x
  2. Step 2: Convert to fraction form
    556,883.91/768,518.28 = 315,163.71/x
  3. Step 3: Cross multiply
    556,883.91x = 768,518.28 × 315,163.71
  4. Step 4: Simplify right side
    556,883.91x = 242,209,072,327.62
  5. Step 5: Solve for x
    x = 242,209,072,327.62/556,883.91
  6. Step 6: Final answer
    x = 434,936.38

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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.