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Finding the Fourth Proportional to 412,526.77, 618,790.64 and 113,009.92

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Solution

The fourth proportional to 412,526.77, 618,790.64 and 113,009.92 is: 169,515.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,526.77 : 618,790.64 = 113,009.92 : x
  2. Step 2: Convert to fraction form
    412,526.77/618,790.64 = 113,009.92/x
  3. Step 3: Cross multiply
    412,526.77x = 618,790.64 × 113,009.92
  4. Step 4: Simplify right side
    412,526.77x = 69,929,478,611.12
  5. Step 5: Solve for x
    x = 69,929,478,611.12/412,526.77
  6. Step 6: Final answer
    x = 169,515.01

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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.