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Finding the Fourth Proportional to 412,516.35, 618,775.01 and 112,999.51

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Solution

The fourth proportional to 412,516.35, 618,775.01 and 112,999.51 is: 169,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,516.35 : 618,775.01 = 112,999.51 : x
  2. Step 2: Convert to fraction form
    412,516.35/618,775.01 = 112,999.51/x
  3. Step 3: Cross multiply
    412,516.35x = 618,775.01 × 112,999.51
  4. Step 4: Simplify right side
    412,516.35x = 69,921,272,930.25
  5. Step 5: Solve for x
    x = 69,921,272,930.25/412,516.35
  6. Step 6: Final answer
    x = 169,499.40

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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.