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Finding the Fourth Proportional to 190,653.59, 262,992.64 and 118,909.05

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Solution

The fourth proportional to 190,653.59, 262,992.64 and 118,909.05 is: 164,026.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,653.59 : 262,992.64 = 118,909.05 : x
  2. Step 2: Convert to fraction form
    190,653.59/262,992.64 = 118,909.05/x
  3. Step 3: Cross multiply
    190,653.59x = 262,992.64 × 118,909.05
  4. Step 4: Simplify right side
    190,653.59x = 31,272,204,979.39
  5. Step 5: Solve for x
    x = 31,272,204,979.39/190,653.59
  6. Step 6: Final answer
    x = 164,026.31

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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.