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Finding the Fourth Proportional to 569,943.63, 786,516.30 and 311,818.14

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Solution

The fourth proportional to 569,943.63, 786,516.30 and 311,818.14 is: 430,305.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,943.63 : 786,516.30 = 311,818.14 : x
  2. Step 2: Convert to fraction form
    569,943.63/786,516.30 = 311,818.14/x
  3. Step 3: Cross multiply
    569,943.63x = 786,516.30 × 311,818.14
  4. Step 4: Simplify right side
    569,943.63x = 245,250,049,745.68
  5. Step 5: Solve for x
    x = 245,250,049,745.68/569,943.63
  6. Step 6: Final answer
    x = 430,305.80

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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.