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Finding the Fourth Proportional to 181,653.36, 250,683.89 and 99,991.05

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Solution

The fourth proportional to 181,653.36, 250,683.89 and 99,991.05 is: 137,988.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,653.36 : 250,683.89 = 99,991.05 : x
  2. Step 2: Convert to fraction form
    181,653.36/250,683.89 = 99,991.05/x
  3. Step 3: Cross multiply
    181,653.36x = 250,683.89 × 99,991.05
  4. Step 4: Simplify right side
    181,653.36x = 25,066,144,879.23
  5. Step 5: Solve for x
    x = 25,066,144,879.23/181,653.36
  6. Step 6: Final answer
    x = 137,988.89

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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.