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Finding the Fourth Proportional to 190,516.80, 262,864.80 and 118,891.20

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Solution

The fourth proportional to 190,516.80, 262,864.80 and 118,891.20 is: 164,039.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,516.80 : 262,864.80 = 118,891.20 : x
  2. Step 2: Convert to fraction form
    190,516.80/262,864.80 = 118,891.20/x
  3. Step 3: Cross multiply
    190,516.80x = 262,864.80 × 118,891.20
  4. Step 4: Simplify right side
    190,516.80x = 31,252,311,509.76
  5. Step 5: Solve for x
    x = 31,252,311,509.76/190,516.80
  6. Step 6: Final answer
    x = 164,039.66

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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.