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Finding the Fourth Proportional to 514,009.55, 770,505.71 and 243,662.85

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Solution

The fourth proportional to 514,009.55, 770,505.71 and 243,662.85 is: 365,253.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,009.55 : 770,505.71 = 243,662.85 : x
  2. Step 2: Convert to fraction form
    514,009.55/770,505.71 = 243,662.85/x
  3. Step 3: Cross multiply
    514,009.55x = 770,505.71 × 243,662.85
  4. Step 4: Simplify right side
    514,009.55x = 187,743,616,021.56
  5. Step 5: Solve for x
    x = 187,743,616,021.56/514,009.55
  6. Step 6: Final answer
    x = 365,253.17

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1.5x scale

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.